(Optional added step)
The patch was now well adhered, but the squared-off edge stuck out above the surrounding wetsuit. I worried this raised edge might easily catch/tear and be susceptible to damage. I decided to attempt to glue the bare neoprene side-edge of the patch down onto the surrounding nylon surface of the wetsuit. The goal was to round the nylon outside edge downwards and smooth it out.
I painted a 3 mm wide coat of glue immediately surrounding the patch (using a small paintbrush). I also coated the bare neoprene side-edge of the patch itself. Wait 1-2 hours.
http://i51.photobucket.com/albums/f3...y/IM002279.jpg
Apply another layer of glue. Wait 1-2 hours. I also added a few more coats to the small tears outside the patching area (see photo).
Appy a final coat of glue. Wait 5 min but glue should still be tacky when sticking surfaces together.
Press-down the side-wall of the patch onto the surrounding neoprene --- continue pressing and holding for 10 minutes.
Note: I first did only the top half of the patch edge, before adding glue to the rest. Once the first half was finished, stuck-down and dry, i repeated the process on the other half of the patch.
The result was the edges of patch were now (mostly) rounded-down --- it is hard to see but for the most part it worked.
Neoprene glue reaches full-strength after 24 hours.
http://i51.photobucket.com/albums/f3...y/IM002282.jpg