I have never fished the Rim Shoals section, so can't help much there. It is one of the big wade areas when the generation is low or off.
I have fished from below Cotter to the Bull Shoals dam with the exception of Wildcat shoals, I have never gone through the roughest of it. Also have fished from below Allison to nearly to Buffalo City, so covered a lot of river miles.
It will all depend on the amount of water they are releasing at the time. That time of year usually means plenty of generation If the big winter rains continue. Really hasn't been that much wade opportunities in the last 2-3 years but it all depends on the lake levels.
Go to the Arkansas Game and Fish Commision website and sign up for the weekly fishing report. You can get the report for the White from 2-3 docks/ guide which will probably put you close on the baits , colors etc for anywhere along the White at the time.
Also go to the swpa.gov website for generation schedules.
Also with your own boat just go slow until you get familiar with a section and pay attention to how other boaters are going in high or especially low water. Usually a lot more guides up in the area from Norfork to the dam. Not nearly as many down around Calico Rock area.
Check all the regulations. I have been checked many more times over there than in TN. Of course an out of state boat may trigger a lot more checking out.
One thing I have always said and it pretty much has happened. If you go for three-four days , nearly always you will have one really good day numbers wise out of those or all three days might be really good.