Catamaran to Nevis

Please advise on the BEST Excursion to Nevis from St Kitts. Would like an active party boat. I do not want to do this through the Cruise Line. I would like to do this privately and rent it privately

Thank you

Our guide Javin from St Kitts is helping us figure out what we want to do next time as we have done his tour twice. He recommends Spirit of ST Kitts or or their sister ship the Eagle. I haven't gotten more info but its a good place to start. Let us know how it is.

We would like to do this, but don't want a party boat.