Also if you see a group of kayakers fishing in a general area and they are
not under-way (trolling), chances are they are fishing bait or structure down deep. It is good practice not to troll your greenback through the middle of the group. Nothing like flylining a mackeral through a wideopen squidbite!
A good thing to do is just bring in your lines and paddle up to the group quietly. Then just listen. If someone is hooked up you'll probably know it. An angler on a fish has priority and you should pay attention to where his/her fish is going and don't be in the way. If you do find an area where you think fish are biting, take time to observe the wind, current, and resulting drift before dropping a line and set up your drift upwind and a comfortable distance away from your nearest neighbor. You'll know the distance is "uncomfortable" when the guy is staring you down.
If you do see someone with a giant fish in their lap, don't ask a million questions. A simple congratulations and a smile will often times get you the dope you need. Respect gets respect, so just take your time and be cognicent of what others are doing. You'll be surprised how much people will open up and help you as long as they don't see you as aggressive or overly intrusive... and this goes for the launch as well.
See you out there!