The Four Star is a low wing monoplane, with fully symetrical wing. It is listed by Sig as being useful as a primary trainer. The wing planeform is typical of trainers, and it has good dihedral.

Trimmed correctly and with reduced control throws, I have successfully used mine to give lessons to visitors to the club field.

The bad rep it has about landing comes from its extreme light weight, and tendancy to float right on by the runway. This can be completely cured by changing from the typical 10X6 prop used on a .40 to a 11 X4, allowing the plane to slow down better with the engine at idle.

typical modification is to clip the outermost bay off the wing to improve roll rate and increase wing loading (as a partial cure of it floating past the runway... but it'll still be light.)

with a low end .40, such as the O.S. LA or Magnum XL, it is capable of doing the entire AMA Sportsman Aerobatic pattern. ... without any miodifications to the kit. It is also able to compete at Fun Fly events.