Hey there Mike, just thought Id chime in about the velcro not liking your wrinkle finish. I also had that same problem when I did my soft door install. I found a product that I think you and many others who read this may like alot. Its an aerosol contact cement that will bond almost any thing to anything. We used to use it when I worked for a counter top manufacturer. Since then I have relied on it to fasten many things other that laminates. Its very simple to use. When I did my install on the doors, like you I found that the sticky backed velcro that they sent would'nt stick very good so I dug out my old trusty can of contact cement and went to work.
All you do is spray the back of the velcro piece you want to attach to the roll bar then spray the area on the roll bar where you want to place the velcro. I would highly recomend that you either tape off what you dont want over spray on, or you use a panel behind the object your spraying. After using this stuff you'll see what I'm talking about. But any ways spray the 2 items, LET THEM SIT SEPARATELY FOR ABOUT 3-5 MINUTES then stick the 2 glued surfaces together. Be sure you have them where you want them the FIRST time because you most likely will never get them apart . I have had real good luck with this stuff, About the only thing this stuff wont stick to has been glossy finishes and oily spots, But usually If you scuff up and clean even these surfaces this glue will adhere after proper prep. This magic stuff is found at almost any Home depot, Lowes , and the like type store. The particular brand I'm using is Wilsonart 700A spray adhesive. Its most general purpose is to adhere kitchen counter top laminates to custom built counter tops. Good luck Mike, This stuff has proven very reliable for me, hopefully you and others will have the same results. Aaron.