If you want to get to the end of the universe, heres how.
1 - Keep doing tricks. Constantly.
2 - Always have a nice entry or you're speed will drop down to 0.
3 - Get fish. They slightly make you go further.
4 - Practice in Free Swim.
5 - Don't hit the bottom of the sea or you'll go back down to 0.
6 - Keep at it.