Howdy folks! I've been picking up a lot of great advice here, but I'm having some trouble in one major area: figuring out where everything is. I'm located in the San Diego area and am limited to using rental boats as I don't have a bassboat. I've read a lot of awesome tips on here for catching bass in the summer time, the trouble is I really have no way of figuring out what the bottom of these lakes are like. I can make educated guesses based on dock talk and what the shoreline is like, but without some kind of lake map or fish finder, I don't know how to find grass-beds, drop offs, humps, flats, etc. My google-fu had been failing me miserably and the only topo map I could find that actually showed the depth of a lake was for Lake Dixon. I suppose I could just randomly throw a lure out, see how far it drops, and see if it snags on anything (losing all but one of my brand-new hardbaits was how I figured out Hodges was covered with dead trees), but this seems like quite a laborious process. Anyone know of any other methods that don't require me to shell out the cash for some electronics? Thanks!