Wow, it's been decades, but I used to spend time there, Ambegris Cay. A good friend, Gerry Proule was chief pilot with Tropic Air, on the Twin Otters, good times, we had access to a little Bombardier Byte. We also used it as a base of operations for excursions to Flores, in order to get to Tikal, Guatemala.
I'm not a racer, run with mixed fleet, same as you.
There are lots of mixed fleet racers here, maybe some will help out, but why not try the Portsmouth Handicap
http://www.ussailing.org/…ardstick/current-tables/
Below the photo, "multihull classes" will give you the ratings for each boat.
Click on Portsmouth Yardstick,(in the photo), then on the right side, "Portsmouth Yardstick Index".
that will get you to a page with all the info & links.
I would setup the whole thing in Excel, then just plug in the numbers. Down near the bottom is an
"HC Sheet" that basically gives you everything you need to build the proper spreadsheet, & Excel has built in functions to give elapsed time from two inputted times.
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Hobie 18 Magnum
Dart 15
Mystere 6.0XL Sold Was a handful solo
Nacra 5.7
Nacra 5.0
Bombardier Invitation (Now officially DEAD)
Various other Dock cluttering WaterCrap
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