There wasn't much material that had to be sewn in near the rub rail to make it fit -just a band roughly 3-4 inches high and about 4 feet long which makes it fit just like a stock cover would. Everything under the TM and 360 is doubled material and triple felt reinforced. The graph pocket is about all you can do in that spot and it seems to do a good job taking the stress off the cover and graph. It all looked great trailering home at 75. I'll keep an eye on things and see how it performs. If there are any areas that I feel need adjustment I'll update and post pics of the corrections.