re: Adjustable Basketball Goal (5' to 10')

I very much remember playing organized ball at 6 to 7 y/o and it was on an 8' rim placed on an existing 10 ft goal. So 7.5 should be fine when. Bc honestly why not just have him practice on a cheap plastic playschool type goal with a smaller ball anyway if you are worried about proper form. I know they go to 5 feet and probably cost around $50 or so.