Someone from Ill offered me a triton single place trailer with a regular cover but wanted like $2900 for it. Said it was $4500 new. I was just looking for the trailer, did not need a cover. Sounds like you just need a cover?
If anyone finds a cover or idea let me know. Some company made blow molded ones that would fit over just the sled and go on any size trailer, but they either stopped making them or fell off the face of the earth.