You didn't mention what region you're considering. Here's my $.02 in the Caribbean
I concur that you should bring your own gear
. Especially with Kites. Most anchorages
are sheltered from wind
and waves. If you want to launch off the back of the cat you'll want a windy anchorage. A few suggestions in the Carib: 1) North Sound BVI, Pick up one of the exposed balls at Saba
Rock, typically windy through the cut, work your way up past the Bitter end. Flat water
. 2) Anagada anchorage BVI has really, really flat water
, offshore wind
. 3) Green Cay (Orient Beach) St. Martin has pretty good rental gear on the beach and some fun wave riding South of the Cay outside the reef. There is a good flat water/beginner area at Gallion a short walk down the coast. Wind can be up and down... it doesn't always blow. 4) Another great spot is the Tobago
Cays SVG. Wind is more consistent, flat inside the reef, bumpy outside. Definitely no rentals.
I'm sure there are others but I can't think of them...Now, if you're willing to dingy out to the wind, and get picked up when your done, that opens it all up.
All are great charter areas with plenty of entertainment for those not riding.