Memorial Day Weekend boat traffic will be bad, probably even worse than usual if the weather is nice, because of the lessening of the Covid restrictions. Most perch fishing areas will be subject to a lot of boat wake. You might want to rethink anchoring in those traditional perch areas (say G can, east side of the Camp Perry range) with small children. The boat wakes will give your 21 foot boat an almost constant roll.

Maybe head up 8-10 miles North, out around Middle Bass Island or North of Kelleys, to get away from most of the boat traffic. Or head out in the evening after the daytime crowd is back in.

Good luck, some others on here will have some other suggestions.