Gonna need about a 50 gallon size bag I would think. I wish you luck, but I don't think I would risk my hard earned money
attempting it.

I suggest you do something like this. See picture attached. I have a twin made out of 2 Four* Forty's, running Evolution 46"s with 10 x 6 MAS props. I hope to maiden in July. Still putting the final touches on it.

Jim