First off ill start by saying i have limited knowledge of boats. this is my first boat. i am mechanically handy. i have the decking removed. the stringers are rotten i still have to finish removing all of the old rot. the foam is all there and is dry doesn't seem to be in too bad of shape. i was wondering if i could clean out the "troughs" where the old stringers were and replace just them. and if so can i use composite decking material that are 5/4 boards. they are rot proof and solid as a rock. any suggestions would be great.