The other day out on the river, my motor started to rev while my boat started to slow down. I backed off the throttle and the motor slowed down to were it should be, then I pushed it back up until the motor started to rev again. I went through this several times and each time I had to give it less and less gas. Basically stair stepping my speed/throttle down slower and slower, eventually getting to the point were I was almost idleing just to keep moving.
Anyway, I anchored on a wing dam and played around catching a few white bass, the whole time hopeing that I wasn’t going to have to use my trolling motor to get back up stream to the launch. 
When it was time to go, I fired up the motor and to my surprise everything seemed fine, until half way back and it started all over again, eventually idling to the dock.
I’m not sure what’s going on here but, I suspect that the rubber fitting that connects the prop casing to the prop shaft fitting is shot and slipping when it warms up. I’ve put my spare prop on to test this theory but, haven’t had time to hit the river. So I guess I have two questions.
First, if this is the problem can it be fixed or do I need a new prop? (If so, my wife will kill me!!!)
Second, could it be something else?
Any insight would be appreciated!!!
jerr
Had to go change my pants the first time-WOT @ 65mph, I can still hear it hitting the rev limiter
– – jerr