Because I have short legs and I am forever forgetting the cusion

So I would like one that is strapped to me

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Its better to have one and not need it than to need it and not have one. Unfortunately parachutes are now in my mindset. I had always done aerobatics with either a parachute or had the martin baker option to hand. Now I dont have that option I would like to give myself a chance. I have read previous posts and understand what some peoples thoughts are.
The super D is fitted with a nice red handle that removes the door. I agree that the rear seat doesnt have much of a chance to clamber forward under any sort of G force. During my career I have had aircraft that dont always behave themselves but have eventually come out of spins. I am not looking to explain why I would like a parachute. Do red bull air race pilots wear them? If yes whats the point at that altitude?
If someone has worn a parachute in the Super D and would recommend one then I would like to hear from them.