Now, you can use CUT to hack away grass that wild Pokemon live in. You can save money not buying repels and can travel without being interrupted by wild Pokemon
Tell the Berry Master's Wife certain phrases to receive the following berries. You can only tell her one of these each day.
For this glitch to work, you need to have not caught the Latios (Sapphire) or Latias (Ruby) roaming in Hoenn. (Note that this glitch means that, on this file, you cannot capture that Pokemon without trading.) Enter a trainer battle of some sort; this Trainer must have the Pokemon you wish to catch, exactly as that Pokemon is. You can, for example, enter Battle Tower battles to obtain a quick Level 100 Pokemon. (Note that non-Battle Tower Pokemon may turn into Bad Eggs!) Lose to the trainer and then proceed to beat Latios or Latias without having any battles - wild or Trainer - in-between. You MUST make the Latios or Latias faint in that one encounter, without catching them or them escaping. Repels are useful to circumvent wild battles, and Mean Look and Shadow Tag to prevent Latios/Latias from leaving.
After beating Latios/Latias, Pokemon #2-#6 of the previous Trainer's party will be used right after that, as if the Latios/Latias were their first Pokemon. These Pokemon will fight, however, as wild, roaming Pokemon do and thus are capable of escaping like Latios/Latias are. Still, you are nonetheless able to capture them as your own. The battle ends with the first Pokemon you catch, so if you want to catch a different Pokemon in the opponent's party, you'll have to defeat the others until you reach it; this can make for some easy EXP. as well.
If you go to the department store in Lilycove City, and go to the counter where you can buy poke balls, you can get 1 free premier ball for every 10 poke balls you buy (they have to be poke balls, not great balls or ultra balls). Premier Balls are just like poke balls but are all white with red rims.