Replaced the 12" wheels with 13" new galvy rims and radial trailer tires. Added two bunks up the middle. The boat, should it ever arrive..grrr...is flat bottomed athwartship with a fair rocker fore and aft. I may be sorry I went with 2X6 bunks as 2X4 might have taken the rocker better. I expect, nonetheless, the boat to sit flat on the bottom and twin skegs. I'll need to shore up the foreward sections with tall supports or a as one feller did, a large wooden box built across the front for the bow sections to land on.
Going to trailer boating in my gimpyness has certainly offered its own challenges and rewards....