I used to have powerlink issues until a mechanic at CP this year showed me a simple yet effective technique to snap on the link and get it working like it was just another link in the chain - which it is. First, you need an really clean chain which can be an issue if you out on the trails when your chain snaps but dirt is the enemy here. Clean as best you can as dirt or excessive grease/lube will cause a stiff link. Second, pull the chain together and place both sides of the link on the chain so it becomes a loop again. Third, make sure the link is on the chain between the chainring and cassette, not the chainring and derailleur so the link is above the chainstay. Here's the trick, hold on to the backwheel then with your right hand push down on the crankarm. The link should snap into place and it's so easy. The key though is to get the chain as clean as you can.
