Great! I've not heard of those trailers recommended so I'll check em out immediatly.
I'm going to take two Yamaha acoustics. The LS16(parlor size) has two separate passive pickups and I figure if one pickup gets dislodged on the way I can work with the other one. I'm also taking my main gigging guitar which is a Yamaha LJX16cp(medium jumbo), which has a more elaborate, and I feel delicate pickup system. I'm thinking of padding the flooring of the trailer with foam or something because as I said before, I have a Fishman solo amp that took a beating from the dozen times I used it when biking to gigs.
I have a large big agnes footprint that we use to cover the bikes at night when we tour, so I thought maybe I would use that for weather, or a souped up tarp of some kind, if there is one...