DinghBat is an 8 foot heavy displacement Pram dinghy designed for use as a tender or small pleasure craft. It has a dart cut into the front of the bottom panel and has a vee in the front, blending into a flat bottom aft. The bottom panels can also be done in 2 pieces. The 2 water lines are at 300 and 500lbs displacement.
With a boat weight in the 50lb range, this leaves a lot of carrying capacity. The boat could also be set up for sail. For rowing, I would recommend a skeg be attached to the bottom. Using a beefy rear transom, you could use a small motor also.
The method used is stitch & glue. For information about epoxy you can read the Threesystems epoxy book.