A boarding ladder that is permatantly mounted on the stern of the boat, this may also may depend on the length of your vessel. It folds up until needed, but is always there. You may want to pratice boarding the boat from the water, it is somewhat difficult ( do this with someone else onboard )
I would also look into an inflatible PFD. They inflate when the PFD gets wet automatically. Taking a boating course,approved by the Coast Guard or the state game commission also helps to make your fishing trip enjoyable.
Good luck.