I couldnt agree more, dad to day driving going slow is ok with carbon bonnet on catch but most CFC bonnets have a glass fibre attached catch which wouldnt hold the bonnet on going fast, with witnessing an accident at a trackday with a 200sx i will vouch for the fact i dont care how good a CFC bonnet is made i would have pins anyway, they look cool IMO.
I got the aero catches for about ?25 well worth it and you can also get locking ones for security.