If your style of shooting doesn't agree with what the shoot requires to compete, then just void the score card when they hand it to you, and enjoy the shoot anyway. The person at the registration table might give you a strange look when you write VOID across the card, but they get over it when you explain why. By doing that when you register, they won't have an issue with you being a cheat, just "different", that's all. If anyone has a problem out on the course, show them the card, smile and continue on. I don't know of a shoot that'll turn you away for this, because you're not competing, just paying to play. Enjoy yourself.