If you are having trouble with getting good medals on the Rio De Janeiro level without cheating (which is a good thing, good for you!)

There are many different grindable rails on the outside edge of the skatepark along with many different gaps for extra points.

First go to the Foundry then turn to the left and you should see a stat to get it hit the half vert and then hit the corner of the side the stat is on.
You should be able to grind the pole and get the stat.

If you can keep on grinding and you can get up to 50,000 pionts of grinding the three poles. Don't ever BUST

Easy way to get up to 100000 points without cheating. Find a rail or rails with a quarter pipe nearby.

Get your special bar to to full. Then grind the rail with a special grind if you have two jump to the second or maunual to it and special grind that.

Land in a manual and go to quarter pipe if you have the speed do a special move off it.Providing you land it all you should get some bulk points. I got 141000 on Tokyo in one combo!!!.

Another good place is the downhill bit with rails near the start point on Canada.

I've got a hint,
if you want to get from place to place and score some points, just hop into the air and when you land, do a manual, when you think you are going to fall, hop again and this will prevent it

Down town Rio
in the rio de jeniro level (you don't have to be on cereer)when you start, hop over the left rail and keep on going forward until you come to that hill going up, go up it and go up the quarter pipe infront of you, and keep to the right!

When you land, after about two seconds of going across, jump up and grind the rail above you, keep your finger down on triangle, and try not to fall over, eventually you will find yourself in down town Rio de Jeniro! &:)

This is a hint on how to get over 10,000,000 points, yes Ten Million Points. I'm not one of those people who say 1,000,000 when it's really just a couple thousand.

Anyways, when you go to foundary ( even though you allready know how...) press start, hold L1 and put the slomotion code in, the perfect balance code in, and the moon phyisics code in......

I dont believe in any of that fake crap about the backdoor code or yohomies or those 2 botton press codes so if you can give me a real good explenation on how to do them and proove that they do work, than please write!!!

Anyways while your in foundary, go to the left at the beggining you should see a pole on the wall, next wall ride on to the pole so you can start you points with a starting something, then grind the pole.

As your grinding, keep on jumping and doing a cannon ball (O-right) then land on the grind again, as you keep grinding do another wall ride and jump which will give you more air, then start doing a cannonball.

Repeat that on and on until you get to the end. then jump and wall ride a little part that is curved across on another ledge from the pole. then grind as far as you can.

Try to see if you can sit there and watch the points go down until there over without doing and other tricks which will cause it to delete the trick.

Sorry for writing a little much.

This isn't really a hint but how can I enter codes on the game when the cheat option is darkened (it was darkened when I was playing)