Usually when I go fishing, I hit the water about 6 or earlier if I can. Until about 9, I always have some decent luck in a few coves/boathouses/creeks/points that I know that are all around 5-9' deep. As soon as it starts to heat up, I just can't buy a bite. I'll throw topwater, cranks, senkos, t-rig trick worms, spinners...they just won't hit anything.
Common sense tells me to move to deeper waters, but I'm just not very experienced fishing deep. What sort of places should I be looking out for? Right now I'm working with some fairly old electronics that make it difficult sometimes to locate any structure, but I'm trying to get some cash to upgrade. What sort of lures do you use? Obviously deep running cranks but what else is good?
Any help I could get would be great,
Thanks