Looks like a fantastic lake. The club looks great too with ASA classes being taught there. Perfect location IMO.
Lots of little bays to anchor in and cook steaks on the BBQ.
Marine Maps
webapp.navionics.com
The lake I am on is 9500 sq miles but very shallow for it's size, which makes it VERY ugly when it is windy. More ugly than the ocean IMO.
While we have big sailing clubs and a lot of keelboats, it's not the best place to learn.
Marine Maps
webapp.navionics.com
————-
That panel is simply a piece of teak veneered plywood screwed in place with 4 screws and washers. Not sure it's needed really.
Some people have installed a plastic access port there to allow getting to deck mounted hardware or run wiring. Of course you could put a nice removable wood panel over top of the plastic port for visual reasons.
@Gene Neill had some photos in one of his threads when he installed a fantastic bow roller, and had to put an access port there.
For example: One of the projects that most people do, is to reseal every mounting hole in the deck with epoxy, to prevent the wood "core", between the layers of fiberglass on the deck, from rotting.
Fiberglass boats with "cored" decks are prone to soft spots in the hull. That damages it's structural integrity. Keeping them sealed from water intrusion prevents that.
Lots of info in the catalina 22 threads here showing people doing that.
@Maine Sail Has the best detailed how-to on the subject.
The Epoxy Supplies Most all boats have some sort of "core" in the decks. Whether it's balsa, plywood or some of the foam cores all can eventually absorb water from a leaking deck penetration. A leaking deck, especially with wood cores,
marinehowto.com
He also sells good Butyl Tape to use for when re-bedding/mounting deck hardware. Check his profile or that website for info.
Avoid some threads though…..it could lead to you completely rebuilding your boat and never sailing it.

Best to do it a bit at a time. Sail fix repeat.