Chip, boat looks great. A simple solution for the doors as well as some decoy storage is to use vinyl coated shelving. You can buy it in a variety of widths, 12, 16 and I believe 20 or 24". Its lightweight, easy to attach grass to, durable and cheap. Attach it to the boat with metal rubber insulated 3/8" wire clips using 1/4" bolts with lock nuts and fender washers on the inside. You can even shape them (especially if you have access to a metal brake). I've been using them on the boats I build since 2003. Here's a set on a boat I just finished that went to NJ.
Let me know if you have any questions.
Brad