Wow! You really took all the juice out of the old Cross Current!Ther were many problems along the way that may be would be less with a top tier brand. But I felt I got enough value out of it to come back with a CCX.
The zip tie is just a suggestion in place of Velcro. I kept it near the top where the connection is. Gave it enough slack so I could slide it off, but tight enough to stay put. My thought is that a zip tie might provide more constant tension like a rubber band vs a Velcro strap. At the time it was also what I had handy.
The velcro straps I am using are as good as a zip tie in the sense that they are not elastic at all. I use two, 2" wide, 24" long. (link)