I made my own oil filter lock fairly easily
Just go to the hardware store and get a pipe hub coupler that will fit around your oil filter and the oil cooler
Trim the coupler so that it will fit around the oil filter and oil cooler's plumbing so that it locks the filter like so
Best thing of all it cost less than $7 bucks

No oil filters coming off for me at the track tomorrow!

 

Freaking awesome! Good job man