DS will compete level 6 this year. He's 9. He has a homemade mushroom that he has used a ton in the past. He seems to have outgrown it as it tips now and/or he scrapes his legs with the level 6 routine. He really wants a real mushroom; one of his teammates has the one where you can put the handles on it. My question is, is it worth it to pay for one at this level? Will he still use it another year or two? Once you hit level 7 is it still helpful to practice on? He does use it almost daily now. Thanks!