Answer:
You are going to want to experiment a little with leader lengths and speeds before trying to let more line out. Generally speaking it is best to keep the bouncer at a 45 degree angle to maximize its performance. Because you are fishing what I would consider relatively shallow water the fish should be aggressive enough to bite even if the bouncer is close to the boat.

If you find the fish a little finicky I would suggest going to a split shot rig (fairly snag free) and drag it behind the boat.

Good luck and save a few fish for me!