@thepodpiper, Tell you the truth I never checked if they do root, I know other cucurbits do, so I assumed melons do it as well. By the time I remove the vines, they all dry and crunchy. And yes, my question was for both melons and watermelons.
That is a great idea with netting! I am actually going to install drip hose under the mulch - natural or fabric - anyway. But I would prefer rain water still still to be able to get in, this is why I don't want plastic, but rather use landscaping fabric.
I got all my answers, thanks a lot everybody!