If I don't find what will work well, I might just leave it in my tank bag, but I'd rather mount it. Based on website pics and measurement, here's what I've found so far that might work. If anyone has had experience with any of these mounts, please speak up - whether it's been for the SPoT or some other gadget. None of the local stores have these "universal" type mounts on display to test fit. SPoT Dimensions: 2.75 x 4.38 x 1.5" CRADLE- Aqua Box II Weather Resistant- Medium Inside Dimensions: 2.86 x 5.75 x 1.2" I test-fit this one that a friend has for his iPod and it fits, but it's a tight squeeze (the top part is a flexible membrane that has enough give to accomodate the depth of the SPoT). The box seems pretty big and bulky, but it offers the advantage of quick removal by just opening the case. There's a Large version, but it seems way too big. CRADLE-UNI FingerGrip -PLASTIC MEDIUM Grip min 2.25/max 4" Arms min .75/max 1.5" Base 5 x 2.5" Looks kinda funky and the base is a bit longer than the unit, but if the arms are grippy enough it would stay put but could it be in there tight enough to not fall out and still be easily removable for extended stops/overnight without it being a hassle or wearing out the grip/tension on the arms? CRADLE-UNI QUICK RELEASE -PLASTIC SM Base to top edge 3.5" Rail Height 1.75" Min/Max Width 1.675/2/75" Looks like it might fit well enough, but with just the two side sliders compressing, is it enough to keep it from knocking loose? How easy is it to open/close the grip on the unit? CRADLE-UNI QUICK RELEASE -PLASTIC MEDIUM Base to top 3.875" Rail Height 0.875" Min/Max Width 2.25/3.5" This one looks better than the small, but the side rails are shorter and might not get as good a grip. Again, ease of opening/closing the grip? CRADLE-UNIVERSAL 2 Grip Min/Max 2.875/4" Arm Length Min/Max .5/2.25" Base Plate 4.5 x 3.0" This one doesn't have a bottom rail or base, but it has spring tension from one side to jam it up against the other side. Is it enough tension to hold it, and how hard would it be to remove it? Other than the universals, there are cradles that look like they might be close enough to work, but I can't tell from the pics. Any feedback on these (or other) units that will work to hold the SPoT in place GREATLY appreciated!