cross SportsRig off your list - I have one, love it, but would never recommend it. Rack and Roll is basically the same design but aluminum (same person designed both) .. neither are "Water" trailers and the wheels can not be submerged.
If water tolerance were not a requirement, would you feel comfortable recommending Rack-and-Roll?
Looks like I can get one for $1,910 with spare wheel included.
Two things that call out to me about R&R:
- Storability. If I need to transport the trailer empty, I can remove the wheels and stuff the rest into the bed of my pickup. Ditto longterm storage at home - pull the wheels, fold in the tongue, and lay it up against the back of the garden shed.
- Ease of movement on grass. I know from experience with my 20' outrigger and steel trailer that every pound counts when moving boat/trailer around on the lawn..... and bigger wheels = better wheels.
.. I have 2 sets of Hullivators and have used them alot with my V1 AI's. The load springs barely assist the lift but I have total faith in them and could see them holding another 15lbs easily .. but you must have a roof rack that can support it (factory stuff isn't usually rated past 150 if that ..check with mfgr)
I just made a second attempt with the Hullavators. Still scared me and I couldn't get it to lift. I think something bent in the Hullavators too because now they are reluctant to engage the hold-down mode and difficult to squeeze the release handles.
As soon as I post this, I am going out and remove the Hullavators temporarily and try to dummy up a side loader (I've got a rooftop box on the other side, so can't try it there).