From all the reviews I read about these trailers they tow so nicely that you don't even realize they are there! I here what you're saying about it possibly skidding out. The trailer itself weighs only 22 lbs empty so it could whip around violently and I dont think I'd even feel it. When it's weighted down with 100 lbs of newspapers like it soon will be it won't be sliding anywhere! :)
My scooter weighs about 280 lbs and because the engine drive train and the rider are all positioned above the rear wheel it has awesome traction. It's tires are 400/10 inch. Cycle tote has a great return policy which states that if for any reason I do not like the trailer I can return it within 30 days and THEY will pay the shipping.
The thing I like about the two wheeled trailers over the one wheels wedge type is that while stopped or going very slow with a one wheel trailer behind you it becomes a balancing act. With a two wheeled trailer it doesnt.
I'll post more after I've recieved it and used it for a while.