[TenGees]

My simple fence lets me bump either end separately. If you want to bump just a little. put a piece of masking tape near the end of the fence so you can easily see how much you're 'bumping'. If you bump only one side, the amount at the bit is around half.

 

[TenGees]

I agree Bob. The only time parallel to the table matters is when you use a miter gauge in a slot. Then you have 2 planes: the slot and the fence. Many just use a square pusher block that rides against the fence - no miter gauge (or slot) required.