Using VectorNET will definitely improve strength and a good idea. But the 4 oz S-2 glass is only 30" wide and will not lap all the way around the rail to the other side of the SUP. For optimal strength you can use 1 layer 6 oz x 42" E-cloth on the bottom and a combination of 1 layer 6 oz x 42" E-cloth & 1 layer 4 oz S-2 on the deck.Put the S-2 cloth on the foam and let it cover as much of the rail as it can, then lay the 6 oz x 42" over it.If using VectorNET on the deck put that on first, then the S-2, then 6 oz....