Maybe this describes it better.

1. Make sure to use Marine grade plywood (or at least hardwood plywood). Resin will not stick to pressure treated or pine.
2. When you cut out the old floor, cut on a 45 degree angle so your new flood (also cut on a 45) will have something to joint to. Sand everything, wipe clean, use tack cloth.
3.Wet out both sides, and all edges with a thinned out coat of resin. Make sure to wet out the exposed old floor as well.
3. Use a structural fiberglass, stiched bi-axle works well. Cut to fit leaving at least 3" of overlap. Wet out fiberglass, then put to floor and roll out with a metal roller. roll, roll roll. Make sure you get out ALL air bubbles, or you will get to know your sander all too well.
4. After it cures, put a second coat of resin down to "level".
5. Sand and paint (or Gelcoat).
till it looks like a factory finish. Make sure when you are installing your captains chairs, you predrill and put resin in all of the holes to avoid water.