Buillt my yak about 10 years ago without hatches. I have recently sold my Wenonah canoe and want to use my kayak as a weekend tripper. Is it possible to retro fit hatches ? I would like to use the exsisiting deck pieces and make them flush with invisble hold downs. I am not too worried about the aft deck since I built it flat but the will the radius of the forward deck stay when I cut out the hatch. Also I used no glass on the deck as to keep the boat as light as possible. Should I even attempt this ? Any suggestions would be appreciated. Tried to post a pic but could not figure out how.