We seldom aerotow here due to site/land restriction.
We always fly at slope. But for scaling , I still install a
Multiplex retract with Dubro 100mm wheel.

If you want shock absorber retract, it may be hock.
It is true that airbrake is not so effective due to the heavy mass.
I fly it at about 18 lbs. Elev and Rudder servos at the tail.
Good for penetration and aerobatic.

Good value for money for its performance.
I get the kit at about 600 euros.