Ok guys, I am the self-proclaimed Lewmar Concept hatch breakage guy
My 99 258 Vista's hatch was broken when I bought it used. And it was the hinges, much like your problem. I called Four Winns and they wanted a couple hundred bucks ($300+ IIRC) for a "hinge repair kit". Greg at Four Winns warned me that they are obsolete and
not many repair kits left. So if you want to go that route, call Greg at Four Winns parts and act fast!
The route I took was I drilled a hole through my hatch and counter sunk the holes that are already on the little plastic hinges. I installed stainless steel nuts and bolts with acorn nuts on the top so nobody would get cut when laying/walking on the deck.
I wish I could take pics for you but I work 68 hours this week

The other option is to replace the whole hatch.