We just got back with 10 people on a '50 cat. The idea of a second dinghy only came up once or twice (per hour). We had some scuba divers > made for some issues.

-- Second dinghy Pro's > see stolen dinghy thread.

-- Second dinghy Con's > extra cost and see stolen dinghy thread.

We've chartered power cats in the past and the boat's cruising speed of the dinghy up on davits vs pulling one was a loss of one knot per hour: two dinghy's would be more. All in all: a cheap set of walkie-talkies can go a long way in sharing one dinghy. And the walkie-talkies make for less fights than some of the cellular texts we sent back and forth to each other: i.e., "When are you coming back?" (may be not said in such nice words)