Here are 2 suggestions on getting to the jetty via kayak:
1. For a low clearance vehicle, go through the Reef RV park like you belong there
. Park around the apartment looking building on the West side of the park and launch from there.
2. For a high clearance vehicle, off the main road drive pass the Reef and once you pass the water catchment looking place and the fence ends, take a left. Take the ATV trail and follow the small fence until you see where people pass through the fence. Drive to the beach and there is a beach road that heads back towards The Reef. You could launch at the Reef boundary and paddle to the jetty. A 4x4 preferably but a high clearance 2x2 can work as I do not always need to engage the 4x4. Just get a good run at the ditch that was built that has since been filled with sand. This was accessible as of spring break as I used it to get to the area back there when I float tubed it.