IMHO, the kickers on most small boats are just for getting out of the channel.
When you go thru a cut (worst case is E winds, outgoing tide) the waves stackup and the OB comes out of the water, then you loose forward momentum. So out of a 10 second cycle, you get about 4-5 seconds with the prop in the water. (it sucks air and cavitation the rest of the time). impellers don't like that for long... -I'm not sure you've seen that yet...
It can also happen in as little as 4' in the open ocean... I would not rely on an outboard to go any distance. (in the summer, its often flat calm, so it can be done, but not for me, as a primary plan.)
As soon as I can get the main up, I'm sailing. (ask around sailnet, and SA and the main board here, about outboards on sailboats - ask ocean sailors, but great lake sailors see this problem too.)
now once you have a inboard, diesel or gas, its totally different. that prop has a good bite and you can motor for hours or days... no problem. (as long at the engine runs)
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Then there's the charts in the islands...
We had a minor hurricane go thru last month, so many of the channels could have changed. sand bars move, and stuff happens... you're pretty much on your own over there..
The big cuts into cat and bimini are pretty good, but the light at NW channel was out in 2005 when we went thru there... (there were supposed be 2 markers but we saw only 1)
You do want to use your gps, and then plot it on the paper chart. That is usually pretty darn good. but the chart plotters can be off... sometimes a lot. my garmin hand held was at the cat/gun cay cut... like 100yds. which was huge for that cut.
most guides will give you a way point for the line up, then a true or magnetic course. and another way point in the middle or other side.
but mostly you steer with your eyes.
BROWN, BROWN RUN AGROUND
WHITE, WHITE YOU MIGHT
GREEN, GREEN NICE & CLEAN
BLUE, BLUE CRUISE ON THROUGH
which is why you don't really want to move around at night too much...
-plus the locals run lights out, all the time... no one cares.
http://www.flkeys-fishing.com/fishing/boatingfishingtips.html
What I always have problems with is judging depth of the coral heads... it usually takes a few days to get use to how clean the water is, and how well you see in 30' of water... 'gin clear' is the term I've heard...
I would like to discuss your fuel filter setup...(E37) but I'll take it off line... -pm sent)
-its a beautiful area, but unforgiving...