I'm new, but lack of a plan is one thing. Also, as you entertain spending the time and money on feeding deer with these trees, you start to want to have apple trees for yourself too.
I put my trees 25ft apart in rows 20ft apart. This is my home, so where they are it's only about 15 trees.
Also, biting off more than you can chew. Got about 15 4-5ft trees, about 20 seedlings for grafting, and 30 seedling spruce and pine trees coming. Been prepping spots already.
Also, HUGE MISTAKE! Hemming n hawing where I am staying at my home or selling it, could of had 4 years of growth here already. Plant a few when in doubt......