Looks great.

Traditional SOF boats were built to flex gracefully. If a boat is going to flex it needs to be built to handle it. Since your boat uses glued joints, if it were to flex you would start breaking your joints. I would use the Kevlar to limit the flexing to minimum. Even though the boat may feel quite rigid now, it probably has some motion. Try twisting it. The Kevlar will tie everything together and distribute the loads more evenly though out the boat. The skin will do this to some extent, but not as effectively as the roving. Besides, the roving looks cool.

: Now the question: I have been debating the necessity of the kevlar roving on
: this boat. Originally, I was going to follow Platt Monfort to the letter,
: but after having handled the boat, it seems plenty rigid. A traditional
: boat, which this is similar to, does not have it. Platt's boats are all
: open top and would probably benefit from the roving, but the closed top
: kayak may be more solid. Should I for go the roving or not??