deep or shallow...perch or bluegill?
for perch on bago, i have had some success shallow when a lot of guys are out deep. for example, i'll be fishing between 5 and 12 FOW and catching nice perch where most people are looking to get out to 16/17 FOW.
for gills, i have better success shallower than i do deeper, but all the areas i fish are back bays that are less than 9 feet of water.
my brother has a bluegill hole he fishes and it's only 2.5 to 3 feet deep. two seasons ago he pulled out a limit of 8" or better fish. he swears by the shallows for gills. won't go in anything less than 10' for perch though.