I think any type of small magnets would work... personally I'll be going with velcro since I'm wearing it out for Halloween, I don't want anyone in the clubs to bump me and the magnets move apart and the disc fall off.
Fletcher, I think he just means the white stands out too much on the suit when it's supposed to be blue lighting. I'm sure it reflects ok... but then in flash photography and daylight situations you've got the blue wire on white tape on a black suit. All blue tape and wire would look more uniform.
edit:: just FYI, we were thinking about using a wetsuit as the base ( as I've seen some who have already ) and in my searchings, came across a scuba message board where someone posted that 30 minutes is a long time to be out of the water in a wetsuit... this was a thread in regards to irritation. A more suitable and cost affordable option may be compression wear. We were going to go with that but I opted to make the suits myself with an athletic type fabric that has a texture that slightly resembles the hexagon print and he'll be wearing the compression wear under that ( because it sometimes SNOWS here in Canada on Halloween . BRrrrr )
Here's the fabric I'm making the under armor out of:
I'm pretty happy with the appearance of it considering I'm lacking the time, resources and funds to have a custom print made up to make the costumes with before Halloween. xD AND it was only $8/yd.
It's that dotty-holey-basketball-jersey stuff...but the opposite site. And a bit of a heavier and more solid weave ( it doesn't actually have the little holes in it ).