Well, Frost, it's been a few years since I seriously fished Shenango. Never really went after bass in the lake, mostly smallies in the river.
Used to really get into the crappies at the railroad trestle west of the 18 causeway. Once you go under the trestle on the right there is a looonnngg gravel,rock bar that runs parallel with the tracks. Depending on the water level you can either see a lot or very little of the bar. The water drops off fast from the bar, probably to twenty feet or so. I know we used to jig for crappies there and do real well. I always went out about two hours before dark to avoid all the pleasure boats and come back in just before daylight. It never failed we would always tie into at least one nice pike when they would come up to the lights to feed on the congregating bait fish.
Unfortunately the power boats make that lake a poor fishing lake. Last time I was there night fishing I was anchored near that bar when a boat came roaring under the trestle with his lights off, spotlight scanning the lake. I talked to this "gentleman" later that night (or early morning) and found out that he and other friends (two or three boats) would play hide and seek like this, flying across the lake trying to "tag" each other with their spotlights That did it for me.
I assume you are catch and release? Didn't think bass came in til June
As for myself, going to break out the thermals and hit Pymatuning tomorrow. I know a north wind is lousy, but hey, maybe I'll just troll for eyes! Good luck!