VP1

this is a subject I have really never paid much attention to until I bought a eaglet that had all the tail surfaces square. On three channels the bird was one of the best flying fun birds I ever flew. (been doing this since the 1950's) So, I built three more and carefully rounded the tail surfaces. None Of them could match the flyability of the original.

In short I would leave the surfaces square until it proved detrimental. And yes I have seen larger full stunt birds with square surfaces.

don't make a federal case of it, try it all and have a blast ....That's right I can't explain the why's and weretofors But I am having a lot of fun.

DONNY