Be standing where you want to stand an hour and a half before official sunset. I’d have a small white bluegill popper on. Maybe size 10’ish. Bigger works too. There shouldn’t be anyone else there so fish down through the hole. You’ll catch some. If the white flies start up…..watch up / down creek for the biggest splashes. I would gravitate toward that fish. Might as well be in the game for a big one.
If you don’t have any poppers maybe try a coffin fly or another larger white fly. Stay as long as you feel comfortable. Rises will continue after dark. Leave when you aren’t having fun anymore.
Have a light to tie on flies and bug spray. If a beaver comes by and slaps his tail, don’t be alarmed, he shouldn’t be back.