Geekygrappler this video is not exactly what Don Silsbe described but it shows the use of the plastic as a release film.
It looks like in the third of the three picture you posted there is a second crack near the block of wood. Is that the block that should be through bolted at the end of the initial 8 inches of tape at the bow? I don't see a bolt, and I think it helps a lot in the bending in and around that area.
The patch will be like a butt joint, and it will be very strong if done well.
Probably should not wait too long after the repair before you try and bend that area. The patch will get stiffer the longer it sets