MC - we both know you have been lake fishing long enough now you should be able to find where the fish are without the fish finder
of course i watch it for fish (or have it beep when fish pass under it) but im usually more watching my depth and the contour of the bottom and then looking around for rising fish and make my way there. Usually in small watercraft your fishing lakes under 50' depth, alot of the time 30' or less actually and a fish finder doesnt have a very wide beam at that depth so when you beep a fish under you its really only maybe in a 10'-20' radius because the beam cant spread out further.
A good number of the lakes that I do my fishing at, all chironomiding and anchored up BTW, have muddy bottom structures that are just like table tops barely changing in depth at all. Without using your finder to locate fish it would be a total crapshoot, especially in the lakes that we're fishing since the fish can be anywhere and where there is no definable structure to hold them in any one place for more than a day or two. The lake our cabin is on is like that. The entire lake once you're 20m out from shore doesn't vary in depth by more than a foot!
Lakes like Roche where the average depth is 28-34' where we like to fish is a similar situation. With these depths you don't see a whole lot of surface action since their feeding zone is rarely more than a few feet off the bottom. Your chances of just dropping anchor and stumbling onto fish is almost zero so you've got to spend the time to search out the fish. A good finder that actually points out fish is invalable on laks like these!
I'm usually a little less patient than some of my fishing friends. Whereas I'm pretty much willing to row around to up to an hour before anchoring and tossing out my lines I've seen them row about DEAD slow, covering the size of 2 or 3 football fields, for two hours or more before they're content that they've located enough fish to make it worth while but when they finally drop anchor it's usually lights out for them. Sometimes the fishable area is no bigger than a good size living room.....no wonder it's so hard to locate!
Guys can anchor almost on top of us but if their fly isn't in that small zone their chances of hooking up are slim to none. Patience definitely pays off and as far as I'm concerned I don't have much of a desire to fish what I think it is barren water.
I was telling my buddy the other day that I'd rather forget my landing net at home before I forgot my finder in order to locate fish and that's on lakes where I have the bottom structure of the lake memorized.....but that's just me. I'm sure other people's thoughts on the matter will differ~