Hi - do a brief search for "Insurance", as it's pretty much the most common question asked

Short, not-binding answer (I am not a lawyer etc): the events are egal and you're covered for liability etc, but, your insurance may decide to drop you/cancel/discontinue/not renew at some point if they find out or if you get in trouble.

Sounds contradictory? Ahyup.  

Toronto subaru club has entire forum dedicated to insurance issues for motorsport enthusiasts:

motorsport insurance @ TSC