Great questions split toe! I see the fruit that Native, LLC, Chainsaw and others produce on their places and I struggle to get a half-dozen pears on a single tree. I've got Kieffers that have been in the ground since 2011 and are pushing 30 ft tall. Lush, healthy trees. Each year I keep waiting on the bumper crop but seems I always get a late frost to wipe em out. This year, same thing...got a few pears on a few trees but not enough to be worth mentioning. I attribute my struggles with where most of the pears are planted which is in the lower elevations of my property. Seems frost settles there first. I do have 8 healthy apples that LLC grafted 3 years ago so anxious to see what they produce in the coming years.
One thing I know for sure - The good ol' native persimmons produce every year with a bunch of fruit and other than keeping them daylighted, I do nothing to them. They've become my favorite soft mast tree over the years due to the predictabilily of fruiting every year.