Hi there-
Sorry for the slow response.
I used the Ocean series. As suggested, the other models a.) don't fit as cleanly and b.) aren't as solid as the Ocean hatch. I used the non-flange model. Folks that have used the flange model had to grind fiberglass to make them fit. Seemed excessive to me.
I removed the old hatch, filled the existing Bowmar holes with a thickened epoxy (thick enough not to run everywhere, think enough to fill any voids).
I'm more of a Sikaflex fan than 4200. I used that, new fasteners as per spec that came with the hatch that required new holes.
I did it in a two-day period that was dry. Pulled old hatch, cleaned deck area of residual sealant, and filled old holes. Tarped/covered the hatch over night for epoxy to kick. Then, next AM, came back and faired/fix any little epoxy areas that may have expanded out of the holes, etc., located hatch, drilled new holes (mark your drill bit - you don't want to go through the deck if I recall), layed down a nice bead of sealant, and tightened new fasteners in an opposite/alternating pattern.
Hope this helps! It's well worth the change. So much better.
Also - depending on the chandlery you're going through, check to make sure they have the hatches in stock. Lewmar, being a UK-based vendor, may have to ship these which can take a while...
Good luck!
- Jeff
