Pete
Most of the plans are for an all open cockpit for a two person design. Glen-L plans on boatdesigns.com is for 15 foot for 1 person, the plan could be changed to work for two. Lou's boats are 16 foot with a partition for a back rest for the front gunner. I have the Brant II and I put it together from a kit. The fiberglass hull makes for more room inside with no framing or bulk heads. I use mine mostly as a floating layout with camo netting on it. I also drag it up on gravel bars and hunt out of it. The fiberglass hull can take more abuse and makes it easy to repair any scrapes or gouges. I do not know what your friend as in mind, as far as versitility, but he may want to consider more than one use for this type of boat. I know Lou has uses his for floating down rivers and having some flex in the hull helps to get it over sunken logs. If your friend wants to save money , he should check into a kit from Lou. The extra money for the kit verses plan build is worth it in my opinion. Less time and work and maintenance was a real plus when I put mine together. All you really need to get is a heavy duty rivet tool for the steel pull pin rivets. The one with long handles similar to bolt cutters are not very expensive and work great.
Lou has a pattern to make an oar and I have an easier method of making one, without a full length lamination, and an easy way to make an angle at the blade end for a better angle and sweep of the blade only through the water. Lou tried an oar I made and liked it.
.