Check out this homemade attachment to the already great MFLB. This is for when you want to get extra ripped. I made mine last night and it actually works surprisingly well, everybody should give it a try! [ame=http://www.youtube.com/watch?v=9Zv2h81ocKo]How to make a third lung for the MFLB - YouTube[/ame] enjoy!
Yeah, I used a produce bag like he suggested and it works well, but I'm sure there is something that is much more efficient. The bags are just so common so it's the main way, if that makes sense. This thing gets me torn.
Finally got back to this. I made one earlier today, It was pretty great. Thanks for sharing this, OP.