As a once-upon-a-time guru and waster of numerous hours inventing home-made devices, I’d say go for it! Just try not to mingle arousal with your jelqing, because over-enthusiasm can give (temporary, but) unpleasant results, as well documented elsewhere.
One of the more gratifying emails I got as a a result of my site (think backwards with my user name if you’re getting confused here) was from a guy in Australia who had scheduled surgery, cancelled it after finding my site, and got solid gains with ‘milking’ (as I explained it at the time). While I felt good about designing cheap and easy devices, I felt better that I’d helped him in an even simpler way.
Remember, if you pull it, it will grow. (Maybe; but we’re rooting for ya ;-)