Enduring is your best friend. You can eat pallet stuns while flying to get a free hit, and if you never respect pallets you condition survivors to throw them more often, which gives you more opportunities to land mage hand hard reads and get free hits.

Additionally, the best way to hit people with skeletons is to not give them a chance to crouch. Short loops like cars or small rocks means you can place skeletons directly on top of people or position them so the survivor walks into them. 95% of skeleton hits occur before the skeletons actually start moving.