Im thinking of making 2 seats for my Lev out of 3/4- or-1''1/8 plywood rounding all corners and coating with thick coats of lauqer and 2 holes on each end for straps to D-rings,Going from center of tube to center of tube (maybe a lil longer?) So my Question is: should I coat the tubes of my raft with something for wear?? Or should I glue something to the bottom of the plywood seats?? Thanks for any info??