I'm st2eelpot's friend (when he has beer
) and I work at Tex's Riverways. We no longer transport rafts upstream from the confluence. We used to, but that policy has changed. We will transport you and your rolled raft downstream if you are organized, punctual, and book in advance.
About motoring upstream, I suggest bringing more gas than you think you will need, and alot more if you are coming in May or June. I don't know how to gauge that amount of gas; I have never motored upstream privately and don't know your motor.
In complete honesty, your easiest option is to borrow (or rent) a canoe, and just do your shuttle with Tex. I'm not telling you this to sell you seats on the jetboat; we can (and will) sell those to someone else. [If we were hard up, we'd still transport rafts]. I'm saying this to save a fellow boater some hassle. Or you can call Tag-a-long.
Good Luck and see you on the river,