Hey all, I'm the owner of the webiste DandyDon linked to here, and he did email us. I responded back, but I'll also give some info here. If this is an inappropriate post, since its somewhat commercial in nature, mods let me know and delete - wouldn't want to go against board culture here!Anyway, I do rent the ACR Aqualink and I actually rent the ACR ResQlink (referenced in another post above by Mike) as well. I hadn't considered using these for diving (though, I'm actually a certified diver myself, just been a while).I would say these cannot be used with a dive canister. Though they are waterproof (and the Aqualink floats) they are not rated for the depth, pressure, and duration associated with diving.Though ACR references a dive canister part # for the ResQlink, it seems they don't actually make it. But, based on the dimesions of other PLB dive canisters, the ACR units will fit inside them as well. I would certainly be willing to start carrying the dive canisters as a rental item as well, if there is enough interest here and in the diving community. They appear to be $250-$300, so I'd do a package deal of a plb/canister for less than double the current PLB rates (so less than $50/wk for both). I am winding down the winter Avalanche Beacon season and am ramping up for diving, boating, general outdoors so will certainly consider. Any feedback would be great.PS - Seems my carriage returns/paragraphs don't work? Is there a setting I missed?