Whatever shapes come out the fastest.
If making more pie is faster then that is what we will do or cake. Since only small knots can be split we go by how many knots are in the round. I have not figured a way to quickly process large knots with out smashing the heck out of them. So far split around the larger knots and then start the generator and run a skil saw across the knots. We usually wait until we have a cord or two of knots then try to break them side ways in the splitter. I would say we get about 75% pie and the rest is cake. Thanks