The backside 3 is a trick I have wanted to get down pat for awhile but I am struggling! I can't seem to rotate fully (Only about 270) and when I do, it's the sloppiest 360 ever and involves my arms flailing all over the place. It's like I am forcing the spin around rather than doing it smoothly. How to people do it so effortlessly? I know I am ready for this trick; I am not a nube. If you guys could impart any helpful tips that you found helpful when learning the backside 3 it would be greatly appreciated!
If you can post a video of yourself doing it I can probably tell you where you're going wrong. It's a little tricky to figure it out without video of you doing it since spinning is combining a whole bunch of different techniques together with the correct timing, so any one of them being off in timing will cause your spins to lose power/rotation.
The SA video already posted is quite good, so follow that as far as learning technique goes, but also be aware that there's a big difference between knowing what to do and getting your body to do it, which is where most people struggle, so if you can post a video of yourself we can analyse your technique and figure out where you're going wrong quicker.
For now, I'd recommend just practicing each step of the 360 technique on green runs first. A HUGE portion of the 360 is just getting the right timing of combining pop, spin initiation and body rotation all happening at the right time, in the right order, so you can practice all of that on a green run while imagining you're hitting a jump to really get the timing down.
Don't take it to the jump until you understand the technique and have the timing figured out on flatground/sidehits first.
I'm sure Jed has a video somewhere that'll help you out here. Got a video of yourself attempting one?
I don't have a free video out for spin technique yet unfortunately, but I'm working on something pretty awesome for it though! I figure 99% of the questions I answer here are jumping, jibbing or butter related, so I'm putting together a free 'jump start' series of videos for the forum that will cover basic jumping, spinning, jibbing and butter tricks in more depth than anything else out there right now.
Hoping to get that done in the next couple weeks.