Read the regs carefully, but when we did it you could not use a bow AND a pole line. You had to choose one. We chose to go pole lines left overnight.
If it's the same type of poles, they are big long calcutta poles. We sank them in the bank. Then, we used a clothes pin to pin the main line (nylon rope) to the tip. We either tied the main line to a tree, or drove a big stake in the ground and tied to that. Coming off the main line we used doubled up trotline string as the leader going to our big J-hook. We used stinky chicken thighs as bait, leave them out a couple days before hand to get nice and ripe. We used a 12-ga with slugs to dispatch our gators, worked like a charm.
It is more like fishing than hunting. Once your lines are set all you can do is wait. One of our gators hit in the first two hours, the second took overnight. We went 2 for 3, caught two 9.5 footers and had alot of fun doing it. Good luck.