Wow, Mike. Those UL's are bad azz! How fast do you run?
This is my main concern when running with way faster boats. I will try to stay on the inside but you are at the mercy of the overtaking boat. What if he doesn't see you, misjudges your speed, has a mech failure? I understand racing has inherent dangers, but as an amateur, un-sponsored racer, I would like to see as much safety as possible.
The Rum Run is basically an open course so not too much to worry about. I got to be a safety boat in the Ventura POBRA race a few years back and it was a closed course. It was a great experience and there was some overtaking but not a large variance in speed.