Question for Highland Gamers

I want to compete in the Highland games in Glasgow ky at the end of May. I have never competed but always wanted to. I have to finish in the top ten in the stone put and heavy weight throw to continue on in games. This is my goal. My question is about the implements. I have none but can make some to practice with. However these won’t be able to be used in the games themselves I’m sure. If I don’t want to buy all these regulation implements will they have some there that I could use for the actual games?