You don't need a gps, just follow kayak fishermen out to where they start fishing for bait. Leash everything you don't want to lose since your only experience has been on the bay and wear a pfd. Stay within ear shout of others in case you run into trouble. Know how to upright a kayak and be able to get back into it before you go into the open ocean. When you launch into the surf keep the nose pointed into the oncoming wave and paddle as hard as you can until well beyond the surf line. Coming back in "Good Luck" and have fun.