You don't actually get any reward but you just get a time for beating old man lobber. So after you beat him you basically have completed all the courses of the whole game.
Go to weiner snichzels and ask for your weinie :) with ketchup
poo in your pants
You first meet him in Hotcha Springs, but when you fight him, you find him in the last level of "???".
beat the elite four than talk to an old man next to the pokemart and hell give it to you
i heard you can talk to the old man inside the house next to pal park. or you can beat the leader in the warehouse, or cheat.
Get 10 pearls and run away! (Run away by holding down B or Y and left or right on control pad)
beat Clair i think. once you beat her the old man will let you in
before i name the boss i must tell you that before you can get to it you must beat all of the previous levels in a certain amount of time. if you want to know what those are, go to 10-7 after you unlock it and approach the door to reat the times that you have to beat on each level and they will be written like this: 000045 which represensts 00:00:45 which coincedentaly is the time to beat for 10-1. ok now that i got through all of that i can name the boss: old man lobber, or as i like to call him, mastah lobbah!
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After you beat the first gym, go to the right of Rustboro City. If you keep going, you'll see a cave with an old man standing next to it. Try to enter the cave. Before you go in, the old man will say that he lost Peeko (his Wingull). Go into the cave and to the right, you will verse Team Aqua or Team Magma (I don't remember which, but it doesn't matter). Once beating him, go to the route left of Petalburg City and you will find a house. Go in and talk to the old man. He will take you to Dewford Island, where your next gym is.
to get surf in sapphire you have to go and beat your dad.then go next door to the left.that is wallys house witch you will need to get surf,but you will need to talk to the old man i belive it is.
probaly because he was beat up and old........poor man.