Hello,new guy here. I will do my profile when I get a few minutes.
Years ago,I took a 3 day float on a Pa river. The weather was merciless at 90,95 deg all 3 days. The only bait with any consistancy was a nose hooked Zoom pearl super fluke. Setting the hook quickly didn`t work well. A 2 or 3 second delay was the ticket.Also if you can,fish the low light periods and shaded areas.
As Scott mentioned,the fast water will probably produce better.
Good luck