Anyone used ocean-rated yacht hatches: replace the RV scrap?

Sounds like a good idea silver, with the exceptions of a few things if you use a certified marine deck hatch...
Once you actually make the change, its going to take you forever to get anywhere due to the 5 mph 'no wake' zones. You have to refer to the right jack as the starboard jack and the left jack as the port jack and you will have the added expense of red and green navigation lights which can be mounted onto the jacks.
Other than that,i think its a great idea , go for it .
Bob