The Central Yellow Wall is a classic must-do problem. The Yellow Wall is the highest wall of the boulder and it faces towards Sylvan Lake. Look for a large lieback flake in the center of the face. This is the problem. Also, as with many other Gill problems, a small painted arrow can be found. The problem is only vertical, but requires excellent footwork.
Protection
This is a serious high problem. Either toprope it from a two bolt anchor at the top (recommended), or use a bouldering pad and good spotters if you have it dialed.
If you don't have a pad or a spotter...TR it. But if ya have a couple pads...try it with the psychological crux. Its only a partial victory if you TR it. I tried to coplain about my shoes on this problem..then I think about Gill doing it in the 60's in big boots..of course, he is a mutant.