The 50-50 Grind is simply doing an Ollie onto a pole or a ledge and riding on your trucks. It is a very simple trick you just need to be able to ollie and balance!

Step 1: Approach the pole or object you wish to grind on.

Step 2: When you get close to the object, ollie onto it and have your trucks land on the corner of the ledge or on the pole and ride that way. Make sure that you keep your balance on the object. (Backside feels very weird to do at first...but you'll get used to it)

Step 3: When you get to the end of the object (or when you start slowing down) you just need to pop a small crappy ollie off of it.