Kept working the shape of the bow to match the turtle deck. Then I put the horizontals in place on the fuselage longerons, and joined the rear bow with the horizontal members, with the black painted corner brackets.
Most of the bending I did with my knees. But for the tight bends needed near the bottom of the bow, I used a simple bending jig of two 2x4 blocks screwed to the work bench (photo 2).
With the bow on the brackets the bow was too high above the turtle deck. So I took the bow off and made small incremental cuts off the ends of the bow, to get the bow down to the correct offset from the turtle deck. Each time I would go less than 1/4", put the frame back together and check the height.
Working the bow into position, attached to the corner brackets.
Simple bending jig.
Rear bow meets horizontal square tube, joined with corner bracket.