Here are a few of my do's and dont's, first, don't base your tip on the amount of fish in the box, I work a hell of a lot harder to catch fish on the slow days then on the good days. Second, don't second guess your guide, I hate when a guest tells me he did great last year at spot "X" why can't we fish there now, most times they don't have a clue where they fished yesterday, let alone last year. Do what your guide instructs you to do, I'm on the water every day of the summer and I know what works and what doesn't, it amazes me when people pay the amount they do then won't follow simple instuctions, I have fished with people from all over the world and some of the worst are guys who fish Puget Sound a few times a year, think they know everything and don't listen to a word I say, usually, his buddies who know little or nothing about fishing end up catching most of the fish.
StorminN feel free to bring your GPS on my boat, there are so many charter boats where I fish that there really aren't many "secret spots".