RE: H3 towing capacity
does your trailer have brakes? if not, you'll be trying to stop twice the weight your brakes are designed for. you might want to ask your boat dealer what they think, but they may not have had experience with people towing with the H3 yet. test it out on some flat roads before you back down the boat ramp, that will give you a feel for it. but if you've got toungue compression brakes on the trailer, i'm not sure that going backwards will activate them. if nothing else, you can ford somewhere around 30" of water, so it shouldn't be too bad.