How to get access to these items on a 268 sundancer

[bigcrunch]

I am working on re-bedding some HW items, a couple of pieces not sure of how to remove the drain in the cabin access steps (I have an idea but before I rip a panel off I want to ask) and the windshield.

Also the front hatch looks like it has been sealed previously (aftermarket sealant squeezed out so not factory) and I can't pull it up, any suggestions on cutting this stuff without fiberglass\gel damage?