Epoxing the seams between the wires then removing the wires and finishing the joint is called tabbing.

The trick is to use a small radiused fillet of thickened epoxy for the tabs between the wires. Then after the epoxy hardens and the wires are removed, install a larger radiused fillet of thickened epoxy. The larger radius creates a thicker fillet that will spread over the tabs without the spreader catching. Tabbing creates an extra gluing effort just to improve the aesthetics of the kayak.

The fillets are needed to increase the distance between the inside glass and the outside glass at the seam. Since the glass is the major strength element of the joint, the joint will be stronger with the glass layers further apart.