+1

Can't stop making the same mistake until you dissect the problem. Figure out why you knick so much. Watch your form, take thought out and purposeful strokes as you strop. Every type of behaviour, be it muscular, neural, whatever, follows the ABC's:

Antecedent, Behaviour, Consequence.

In this case, the Behaviour is the "form, technique", and the Consequence is the nicked strop. Find the antecedent. Stance, strop height, tension or lack thereof, twisted strop, etc.

I don't mean this to sound uppity or harsh....but I really nicked my first strop, and it took a couple PM's from a senior member to get me on the right track.

Hope this helps a bit.