Crashburn has a good point. Old saying on ground loops is that "there are those who have and there are those who will" You can't horse a Cub off the ground and make it before BOTH wings are ready to fly! Have been there/done that also and learned that same valuable lesson. A bigger engine won't help ya' there. Mine will tip stall in a heart beat with the OS 70 if I try and fly it off the ground before it's ready.