ORIGINAL: gaRCfield
I put 3-4" stripes on the bottom of one of my planes and it was amazing how well it stood out. The plane was red and white, and I just put white stripes under the wings and stab. I would probably stick with the yellow and blue and just make a good visible pattern.
Me too. Every one of our planes has some stripes (usually 2-3) on the bottom of the right wing, usually 4-6 inches wide, from leading edge to aileron. Everyone at the field knows it's our plane by the big wide stripe, but my (getting older) eyes can pick it out in the sky really well.
Jack