I'd like to install some mutes on my fretless. I want to come up with something that is clean and simple but rugged, and I want to be able to engage/disengage the mutes mid-song. I know they are a couple products out there, but I would like to make something myself (both to save money and because I like to build things). My original inspiration was these: http://www.bassmute.com/bassmute/bm_mainframe.html, but I almost choked when I saw they were $100. I could probably rig up something like this on my own, but I was wondering if anyone had any good ideas for a different approach.