One of the flaws of Parker boats (all boats have flaws, and Parker has very few) are the plastic deck hatches installed over the bilge access. These are rather large plastic covers. And they flex. And as they flex, the screw are slightly pulled and eventually the threads on the screw will "worm-out" the wood core making the hole bigger and allow water into the wood core. Eventually the wood will rot.
I've installed two of these commercial-grade aluminum deck hatches on my own Parker. Both are thru-bolted so there is no chance that the fastners will pull-out. The aluminum is monumentally stronger than the cheap plastic hatch and do not flex. And for the most part, the aluminum hatch does not leak water although I wouldn't put my lunch under the deck.
If you look past the pretty woman with the fishing pole, you'll see a Bomar aluminum deck hatch (blue in color) covering the bilge access. I think I have a 24" oval back there.