Soft Spot In Flooring

[Stillrunning]

When we decide to repaint the floor last week I also decided to remove all srews from flooring re-seal them then after painting drill all new holes. When painting the floor my knee found a small soft spot. This past weekend I routed out the 1 1/2' X 2' section leaving the lower skin on the flooring in tact. They used those 6x6 square peices of wood which I decided to go with a whole peice of wood. I added one coat of semi heavy fiberglass cloth to the bottom of the wood and was going to resin to the sheet of glass still in the flooring of the boat pulling together with screws. Then after drying I'll remove screws and resin back in the sheet of fiberglasss we cut out of the boat and then feather back into flooring. I ground all of the edges so to not have any excess build up of fiberglass. Does anyone have any opinions of how I'm doing the job or a better way of doing so. Hammer I am taking picks and will post when I can figure how to post them. Its a little tougher sense our home comouter is down and I'm posting from work. Thank for any advise.