I think you'd do better w chartering a local guide service than renting a boat, they know when and where the fish are and how to catch them, a half day trip should be cheaper than renting a boat for $500. If you don't have any beach rod holders for surf fishing you can make some cheap ones w thin walled 1.5" PVC SDR. cut it at a sharp angle w a hacksaw and it's easy to drive into the wet sand to hold your rod while you re-bait or take a fish off the hook. I cut 10' pieces into 2 tall holders w the diagonal cut across the middle of the pipe.