Honestly, I could never chain another shiny Kricketune to replace the one I lost. He meant far too much to me for me to reclaim him in such an easy way. Instead of the Bug Catching Contest, I may hunt Kricketot in swarm in Viridian Forest instead, just as long as he's found on HGSS again.
I'm for and against cloning, myself. For, if it's to backup shinies, but against if it's to clone shinies for trading. :S An R4 works like a DS cartridge, you can put roms of the games onto it and play it as a normal DS cartridge would play. It's illegal and legal depending on the games you put on there, and wether you own the real games (as you can go behind the idea of backup-ing the rom). Either way you look at it, the shinies are still found by the game's coding, so they're no different to shinies found on real carts. Some people just don't think so. :/
And I'm hoping to reclaim Groudon on SoulSilver as well, rather than in Gen 3. <: It wouldn't be the same otherwise.