Gusss

I can tell you this much - Judo is fun.

Uchi Comi with a rubber tube against the wall.

Kesa Gatame is really difficult to get out of and does not require a Gi to be effective. However it is a hold down but not a submission hold. This means you can hold your opponent down and they can just lie there for ever. This is useful for Judo rules where you only have to hold them down for a few seconds but not for MMA where you need a submission. There is one other issue - one of the opponents arms are free in this hold down so in MMA they can be hitting you with it.