Always thought that a thikker secion at the tip would avoid tip-stall. Way of my thinking was that the funflyers with the thick section can fly so slowly.
Today I read an article in a Britisch magazine RC Model World that states that for a symetrical tapered wing the tips should have a thinner section. So for example a 14% root section (NACA0014) should have a 12% tip section (NACA0011) to void tip stall at low speed landing. It had to do with a to low Reinolds number for the tip section if this is to thick at landing speed.
I'm in the process of choosing a wing for a Giles project (tapered wing with streight trailing edge). The root is Selig 8035 14%. What is the best thickness for the tip section?

Thanks, Hans