Thanks SimonB. Actually my friends have a boat reserved through TMM and arrive Aug. 7. Mobunny and I will be at Mata Rock from Aug 4-18. Mostly we'll be diving but are going to spend two nights on the boat. Our friends will drop us back off in SP or CC where we can take the water taxi back to SP, before they head to Placencia. I was wondering what a good two day trip on a catamarn would be. I'm not sure just how far we can go and come back to CC or SP in two days.