1. Mark the sides of your yak with small dots to indicate the legal size for the most popular types of fish you are shooting for (i.e. 10, 12, 14, 22, 36 inches, etc). If the fish is legal (hence apropos for the adjective 'large'), then you can use a rubber net or gaff if you intend to keep it. I agree with the others on keeping your balance to compensate for the weight when bringing up the fish. Had my share of flipping into the brine....
2. Most definitely. You can mark your best spots, and better plan your trip.
3. You can chase whatever you want, but only the Lord knows what your bounty will be at the end of the day. As for open water, make sure the conditions are safe, and that you have a buddy or two to rely on when trouble presents itself. Otherwise, it is best to have all the appropriate safety gear, and let someone know of your intended paddle plan. Err on the side of caution.
Good Luck and Have Fun!
