I understand the theory of using multiple squares but thats only possible if you have an intact surface to lay them out on,my deck had already had the center section removed by a previous owner to allow a poor stringer fix,or if you pull the whole cap and turn it upside down.
I would also imagine you would need around 3-4 extra gallons of resin if you construct the deck in that manner.
I sealed the underside of my sheeting with resin and 3/4 oz CSM.
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73 v20 cuddy inline 6
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