Dave & Steve,
I definitely understand your lack of interest in producing a trailer that seems completely unnecessary and redundant. I don't dispute your assertion that car topping is completely viable and likely the best and least expensive option. However, it seems that there is a strong interest amongst a significant group of purchasers in a trailering option. Just to dispel any uncertainty and associated nervousness in the buyer, could you show how the boat could easily be trailered with one of those widely available models? A few folks are obviously unsure of exactly which trailer might work and how with this boat. We could then know that if we buy that trailer and a few extra fittings it will work well. There would be no extra mucking around and ending up with a trailer that might not work as well for some unknown reason. The most intrepid will likely still roll their own option, but for people less inclined to tinker and just go sailing there will be a clear path.
Hoping you guys are starting solid 1 design class here.