Can someone post a good video on Boing -e- Boing, I have been playing for 4.5 months and I haven´t been able to get the tecnique for it.
Here’s a tutorial by Duncan Crew Member Ian Poh:
http://www.mastermagic.net/Tricks.html
where iI learnt it! Good luck! 
I don’t do Boingy-e-Boing but I does this instead:
THIS IS NOT BOING-E-BOING BUT IT’S SIMILAR TO BOINGY-E-BOING.
Go in a Mach 5 mount, then start moving your finger up and down.
don’t double post, just modify the post. and I found out that a shorter string makes it easier
Yes it does actually. I tried Boinging on my short cotton string and its amazing.
before you do it, you can try pushing the yoyo forward if you know what I mean…but good luck on it and have fun!!!..
Try the Search Function. You’ll find A LOT.
And don’t worry, i’ve been yoyoing for 6 months and I still can’t get the basic feel for it.
I’ve been, hoever, getting better at it by doing a weird variation. Go into a Wrist Mount and do the Boing e Boing motion. You’ll see that it’s easier and helps getting the motion down.