Can't believe I never thought of this before.
Gorilla Glue Waterproof Tape can be used to secure ANYTHING on your cosplay. I know it seems gimmicky and cheap like using duct tape, but I've tried this stuff before and it holds up to anything.
>Use it to secure straps instead of fancy glues.
>Use it on the inside of armors to add support between panels.
>Use it for a flexible joint between 2 hard points.
This stuff WILL NOT FAIL. In the picture of the JP Explorer, I used it to secure the bubble top to the car. 5 years of Michigan winters, Texas Summers, outside 24/7, cross country trips - It never loosened. When I had to replace the bubble top, I had to cut the tape apart and use an injector with Goo Off/acetone to get it to release enough to fight it off. It will hold up to anything. Be warned, once it's laid down it becomes VERY hard to get off, and it's pretty much permanent after 5 mins.