You can put 4 people in one Moke. If you have 6, you would need two or as you suggested a truck with benches. Mokes are more fun. Anegada Reef Hotel rents the Mokes. Think little open air Jeeps. I would still suggest a rental and visit multiple locations throughout the day. Yes, Cow wreck is great, but there is more to Anegada than one small section of beach. Walk by Cow Wreck and go to Tipsys. Better service and nicer place.