Heavy fiberglass mat

[RidgeRunner]

Originally Posted by gw204f

Don't use just the mat for closing your transom and making your bracket. It will take tons of time and resin to get the proper thickness and even then it won't be as strong as if you used 1708 or 1808.

You could use it, but I would also get some wide rolls of roven and alternate layers.

Yep, Or buy the 17oz. stitched fabric in wide rolls without the CSM and alternate that with the CSM you have, you would essentially have 1724 a little resin rich but still very robust.