At any rate, here's what I came up with. The servo tray consists of seven pieces, plus one more as a mounting tab. Here are the dimensions:
|A||Base||3-1/2" x 2-3/8"|
|B||Left side||2-1/2" x 3/4"|
|C||Front side||3-1/2" x 7/8"|
|D||Right side||1/2" x 7/8"|
|E,F||Sail winch mounts||1" x 5/16"|
|G||Back side||1-1/8" x 3/4"|
Wait until it's laying in the hull before attaching the mounting tab. You'll also be gluing one large hunk of black plastic to the hull floor beneath the tab to give a place for a screw to attach, plus two smaller scraps of ABS as guides on either side. There's also a somewhat elaborate hold-down glued to the hull at the transom to keep the tray flat on the bottom of the hull.
Completed and installed servo tray and servos:
If I had it to do over again, I would move the sail winch slightly aft, as close as I could get to the rudder servo. My set-up just barely clears the crewman's winch, which is mounted under the deck just forward of the servo tray.