diff --git a/tailbone/forms/types.py b/tailbone/forms/types.py
index de7e117c..366794f4 100644
--- a/tailbone/forms/types.py
+++ b/tailbone/forms/types.py
@@ -2,7 +2,7 @@
 ################################################################################
 #
 #  Rattail -- Retail Software Framework
-#  Copyright © 2010-2018 Lance Edgar
+#  Copyright © 2010-2019 Lance Edgar
 #
 #  This file is part of Rattail.
 #
@@ -27,6 +27,7 @@ Form Schema Types
 from __future__ import unicode_literals, absolute_import
 
 import re
+import datetime
 
 import six
 
@@ -63,6 +64,18 @@ class JQueryTime(colander.Time):
         return colander.timeparse(cstruct, formats[0])
 
 
+class DateTimeBoolean(colander.Boolean):
+    """
+    Schema type which presents the user with a "boolean" whereas the underlying
+    node is really a datetime (assumed to be "naive" UTC, and allow nulls).
+    """
+
+    def deserialize(self, node, cstruct):
+        value = super(DateTimeBoolean, self).deserialize(node, cstruct)
+        if value: # else return None
+            return datetime.datetime.utcnow()
+
+
 class GPCType(colander.SchemaType):
     """
     Schema type for product GPC data.
diff --git a/tailbone/templates/tempmon/probes/view.mako b/tailbone/templates/tempmon/probes/view.mako
index 8bf3fd2e..1befd1e4 100644
--- a/tailbone/templates/tempmon/probes/view.mako
+++ b/tailbone/templates/tempmon/probes/view.mako
@@ -5,31 +5,36 @@
 ## page body
 ##############################
 
-<ul id="context-menu">
-  ${self.context_menu_items()}
-</ul>
+<div style="display: flex; justify-content: space-between;">
 
-<div class="form-wrapper">
+  <div class="form-wrapper">
 
-  <div class="panel" id="probe-main">
-    <h2>General</h2>
-    <div class="panel-body">
-      <div style="clear: none; float: left;">
-        ${self.render_main_fields(form)}
+    <div style="display: flex; flex-direction: column;">
+
+      <div class="panel" id="probe-main">
+        <h2>General</h2>
+        <div class="panel-body">
+          <div>
+            ${self.render_main_fields(form)}
+          </div>
+        </div>
       </div>
-##       % if image_url:
-##           ${h.image(image_url, "Probe Image", id='probe-image', width=150, height=150)}
-##       % endif
+
+      <div style="display: flex;">
+        <div class="panel-wrapper">
+          ${self.left_column()}
+        </div>
+        <div class="panel-wrapper" style="margin-left: 1em;"> <!-- right column -->
+          ${self.right_column()}
+        </div>
+      </div>
+
     </div>
   </div>
 
-  <div class="panel-wrapper">
-    ${self.left_column()}
-  </div>
-
-  <div class="panel-wrapper">
-    ${self.right_column()}
-  </div>
+  <ul id="context-menu">
+    ${self.context_menu_items()}
+  </ul>
 
 </div>
 
diff --git a/tailbone/views/tempmon/clients.py b/tailbone/views/tempmon/clients.py
index d38d38f2..f455d0f8 100644
--- a/tailbone/views/tempmon/clients.py
+++ b/tailbone/views/tempmon/clients.py
@@ -2,7 +2,7 @@
 ################################################################################
 #
 #  Rattail -- Retail Software Framework
-#  Copyright © 2010-2018 Lance Edgar
+#  Copyright © 2010-2019 Lance Edgar
 #
 #  This file is part of Rattail.
 #
@@ -34,6 +34,7 @@ from rattail_tempmon.db import model as tempmon
 import colander
 from webhelpers2.html import HTML, tags
 
+from tailbone import forms
 from tailbone.views.tempmon import MasterView
 
 
@@ -101,6 +102,9 @@ class TempmonClientView(MasterView):
         # disk_type
         g.set_enum('disk_type', self.enum.TEMPMON_DISK_TYPE)
 
+        # enabled
+        g.set_type('enabled', 'boolean')
+
         # archived
         g.filters['archived'].default_active = True
         g.filters['archived'].default_verb = 'is_false'
@@ -134,6 +138,8 @@ class TempmonClientView(MasterView):
         f.set_type('notes', 'text')
 
         # enabled
+        if self.creating or self.editing:
+            f.set_node('enabled', forms.types.DateTimeBoolean())
         f.set_helptext('enabled', tempmon.Client.enabled.__doc__)
 
         # online
@@ -145,6 +151,18 @@ class TempmonClientView(MasterView):
         # archived
         f.set_helptext('archived', tempmon.Client.archived.__doc__)
 
+    def objectify(self, form, data=None):
+
+        # this is a hack to prevent updates to the 'enabled' timestamp, when
+        # simple edits are being done to the client.  i.e. we do want to set
+        # the timestamp when it was previously null, but not otherwise.
+        if self.editing:
+            data = dict(data or form.validated)
+            if data['enabled'] and form.model_instance.enabled:
+                data['enabled'] = form.model_instance.enabled
+
+        return super(TempmonClientView, self).objectify(form, data=data)
+
     def unique_config_key(self, node, value):
         query = self.Session.query(tempmon.Client)\
                             .filter(tempmon.Client.config_key == value)
diff --git a/tailbone/views/tempmon/probes.py b/tailbone/views/tempmon/probes.py
index 479d6c31..1e81f56f 100644
--- a/tailbone/views/tempmon/probes.py
+++ b/tailbone/views/tempmon/probes.py
@@ -37,7 +37,7 @@ import colander
 from deform import widget as dfwidget
 from webhelpers2.html import tags
 
-from tailbone import grids
+from tailbone import forms, grids
 from tailbone.views.tempmon import MasterView
 
 
@@ -168,6 +168,23 @@ class TempmonProbeView(MasterView):
         if self.creating or self.editing:
             f.remove_fields('status')
 
+        # enabled
+        if self.creating or self.editing:
+            f.set_node('enabled', forms.types.DateTimeBoolean())
+        f.set_helptext('enabled', tempmon.Probe.enabled.__doc__)
+
+    def objectify(self, form, data=None):
+
+        # this is a hack to prevent updates to the 'enabled' timestamp, when
+        # simple edits are being done to the probe.  i.e. we do want to set the
+        # timestamp when it was previously null, but not otherwise.
+        if self.editing:
+            data = dict(data or form.validated)
+            if data['enabled'] and form.model_instance.enabled:
+                data['enabled'] = form.model_instance.enabled
+
+        return super(TempmonProbeView, self).objectify(form, data=data)
+
     def unique_config_key(self, node, value):
         query = self.Session.query(tempmon.Probe)\
                             .filter(tempmon.Probe.config_key == value)