1 more way.
A 2' stake that has at least a 1' inside diameter eye is driven into the ground so that only the eye is above ground.

Put the biggest plane in the club ahead of it with about 3' between the end of the tail and the eye.

Tie 1 end of 1/4"synthetic rope to the eye. Take the rope over the right elevator, then over the right wing, down and under the belly, up the otherside, over the left wing, back and over the left elevator, tie it to the eye.

A smaller version should be built for the 1/2 A's.

NO WINGS or DELTAS go into these as there is no vertical tail to stop a slip off.