Why do they have to be split if they are over 8"? My buddy has the the same boiler I am getting and he burns up to 12" diameter, he just has to toss in a few smaller ones with it. It will burn 10" logs (firewood) with out issues. He has burned bigger but says it doesn't work as well. Maybe another piece of the puzzle that is missing, is that the trees this far north average in the 10" and below diameter. Sure there are some bigger ones but they are not in abundance as they are in the south. The pictures that I see on this forum of trees that some of you guys are harvesting simply do not exist in my area. The average size I will be harvesting will most likely be in the 8" and below. That is why I am after a grapple that will clamp down on the smaller diameter to hold them secure.