You should get yourself up there and ride them all asap, then jump off the top.
Don't talk about it. DO IT.
Get the all day pass, which works out really cheap.
You can then ride the three rides as often as you like.
Best to go up during midweek, that way you can virtually hop on each ride with little or no waiting.
Beware going up on a Fri/Sat. I have waited in line 15-20 minutes to get on various rides.
The Sky-Jump is timed, so just book your time, and off the edge you go.
Worth doing once, despite only lasting 17 seconds.
Why? Because its there
Below is a quick photo from my front seat of X.Scream, before they confiscated my camera...lol.
-- Modified on 8/26/2013 7:35:08 PM