I've seen those Chalks flights takeoff from the sealane right from the Macarthur Causeway leading to Miami Beach many times. Almost went aboard once - ended up on a Metro gambling junket instead (30.00 US round trip to Nassau).
They are a good outfit - never lost a passenger til now, although 2 crew were lost near a cayos.
Link to the beauty of flying Chalks from Miami to the Carribean:
http://www.worldairroutes.com/Chalks.html
This is a repost- my original was deleted .
