After many falls I've managed to pull a footgun. Might be a while before I can turn or attempt a cone though.
I was going to write up how I worked up to this trick but actually everything I did was from reading Megan McIntosh's blog post on sitting tricks.
"Any tips, reviews and advice are my own opinions and are not to be taken as professional view points. The information on this site is what has worked for me and is here for guidance only, but I hope you gain insight into the various activities I partake in." Jonathan Chen