all good stuff in here. i fess tho, not being freestyle orientated, i have never actually tried a 360. i defo have the 180s sussed tho; going both ways, grabbed and tweaked and when needed, with ollie pop.
for me the main obstacle to over come, was to get straight in my mind, all of the seperate elements of the jump; the speed and approach, the direction up the transition, the edge and pop and the application of adequate shoulder movement to acquire the perfect amount of rotation, the lifting of the knees to realise and tweak a grab.
for sure enuff speed negates the need to go for ollie pop, but there seems to be some confusion over the cause of 'corkedness';
from what i have read, the application of a carved turn (on the transition) to establish (too much) edge bite can cause invertion during the spin. over enthusiastic ollying will potentially cause a back flip no? as said tho, this is what has been read; i have only ever cared for 180s thus far, something that 'pros' don't necessarily consider to be a rotation at all, but a 'mid air turn'!
in any event, when someone quotes Walsh as saying 'take off from the toe edge of your rear foot
', it is tuff to argue that you should be leaping from both feet at the same time.