Hard to Open Sliding Hatch
A word of caution with UHPDU, or whatever that white plastic stuff is. We replaced our broken hatch slides with routed u-shaped channels on both sides and have watched the stuff crack and chip continuously since we installed it. (People lean an elbow on it when they stand in the companionway, and it cracks.) It may not like UV rays, either. It now needs re-doing, less than 3 seasons later. This is a hassle, since it involves removing and rebedding the hatch cover. We are switching to stainless channels. If they squeak against the fiberglass hatch we''ll insert flat plastic slider strips on the underside of the hatch,(out of the sun, supported its entire length by the hatch so there''s nothing to lever against, and simply glued in place) or maybe just squirt some WD-40 or soap in there.