Need to pull boat for prop change but river very low and must trim drive up to max or close. My question is this OK and what RPM should I keep RPM under? My guess 2K or less, I hope?

thanks

If you're trimmed into the "trailer" zone then you should be at idle... maybe barely above. The u-joints take a real beating otherwise.

Only if its a have to. I would think about getting close and toss a line, shut down and pull it in
Thinking your above half way

For me anything above half the prop is to far out of the water to do any good. I only do that at idle, less than 1000rpm.

I very good drive guy I used to know (RIP) used to say at idle just do not go past the horns. I have to trim up to get out every time, of course I am at idle, any more and it pushes the transom down. Never have had a bad Universal.

Yep, same here, I have to trim up into trailer territory to get in/out of the end of my canal. I keep dreaming that they'll dredge that someday... Probably move on to a pontoon by the time that gets done.

I had to trim to about 3/4 on gauge or maybe a little less. At WOT sweet spot on gauge is at 1/2 or less. Next time boat is out I want to get photo where drive was. Or... anyone have photo to post?
BTW, depth gauge only showed 2.5 ft.
thanks

A depth of 2.5 isn't that bad, if that's 2.5 under the boat. Full down the might be a tad more then that