The best bet is a trailer that stores the boat on the beams but has hull supports near the front beam for travelling.

When sailing your front beam bolts see mainly sheer forces. and a small amount of tension on the inside bolt. When travelling on the road a boat supported by the front beam will have about 90% of the hull weight on the beam bolts. A quick review of trailer design lit. suggests your boat may experience accelerations up to 3-4G so on a mozzie with a hull around 20kg that puts an 80kg load on the at the beam bolts. Not a big deal for the bolts but in terms of the long term stiffness of you platform not a good thing.