first you start of getting lots of nice entrys while adding in some flips and twists (try to keep a combo going by quickly entering the water then leaving) after getting about 15-20 nice entrys do a tailslide trying to keep yourself completely horizontal this will send the dolphin at a 45* angle significantly increasing its speed when you come back down go in and then go back out completely vertical at this point you want to get in alot of starslides by holding the down arrow you should reach mars or jupiter on the next entry go horisontal again and do another tailslide this should rocket you back up into space get in alot of tailslides and severely increase your speed at about 00:15 make sure ur back ona downward track get one last nice entry and do another tailslide the faster you do tailslides that faster you will go on this last acent hit as many starlides as you can (hold down the whole time and right when you hit a slide immediatly hit up) do this all the way up to pluto this if this is all done correctly you will pass the End Of The Universe - It looks like a restaraunt
its probly because once you get this far, you have pretty much beaten the game, and if you keep doing tricks you can beat most of the scores posted in the comments
one more thing, if u hit a star slide while ur on the rapid decent dont hit up to launch urself, instead ride it until the end of the slide. usually it will slow urself enough so that when u hit the water you dont hit the bottom. but when you hit the water dont accelerate immediatly, wait until you curve yourself
