The best replacement for ailerons is rudder.

The best alternatives to ailerons are rated as following:
★★★★★  rudder
★★★★  flaps
★★★  spoilers
★  flaperons
  wing warping
  barn door

Your alternative for ailerons is not listed? Suggest!
Speaking about ailerons, one probably shouldn't forget about 1 servo.

Other search terms related to ailerons and their ratings are:
★★★★★ 1 servo
★★★ rudder
You have in mind a companion for ailerons and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of ailerons in all years. Click on graph for more.
ailerons
rudder
flaps