IF you mean to say, do I have to learn how to do things differently, no - trials on a 24" bike is just the same. 24" riders seem to include a lot more flowing techniques. Bunnyhops, manualling, rolling gaps. But these are all tricks you can do on a stock or mod. You can learn some BMX tricks and throw them into your riding, but no-one's making you do it. Aener on here, owns an onza zoot, and he rides more traditional trials on it. Although he does occasionally have his chris akrigg style nuts moments.