How do i find a friend's secret base in Pokemon emerald? - Answers

First you need to mix records with your friend you can do that on the top floor of the Pokemon center talk to the lady behind the far right counter and choose record corner then when your linked up stand in the colored squares to mix records. Now start searching to find your friend's base when you do find it enter it and check the computer it will ask to register this base you should register the base that way if your friend were to ever change there base and mix records with you again you will still be able to enter the original base and the new base.