Just a thought... with your new control lock. After using mine and storing it in several places I worked out a system I like. I attached a small D ring on the flap motor cover near the top. When I pull my Antisplat Gust lock... I hang it up between the seats with a carabiner. It hangs completely out of the way of both pax, yet is ready right when I park. Gusty winds catch the big rudder on my 9 at just about any velocity.
I used an existing screw on the motor cover... so no drilling or mods.
The gust lock is sturdy and clever. There is a bit of side to side motion when installed... if I push on it. Never have had the wind move the ailerons though.
Had a hard landing the other day... and the antisplat front nose gear caught and restricted the motion on the gear. Both products worth the cost.... to me.