Update 3: Added a 148 token version.
Update 2: Now down to 157 tokens.
Update 1: With improvements from @freds
This is a token optimized version of the polygon drawing routine I originally used in Pico Tennis. I've managed to get it down to 173 tokens, which I'd like to think is comparable to p01's 163 token trifill routine.
Obviously it's going to depend on your needs for which method you use. If you only need to draw triangles then you'll want to use the trifill method, but this allows you to draw shapes with any arbitrary number of vertices.
The only catch with this method is that it only allows your shape to be concave on a single axis.
If anyone has any alternative methods or optimizations please let us know.