I've already documented my bulkhead hatch plan using bucket lids, but have thrown that out in favor of larger hatches. I realized that the bucket lid hatches were going to drive me nuts. Too small.
I thought about making my own, but found these sit-on-top kayak hatches that are just the right size and may even be sturdy enough. There sure are alot of T handles to close, and that could be annoying, but it occurred to me that much of the time, the hatches won't even need to be in place. These hatch covers can be stored in the fore and aft compartments at anchor and in light airs.