Thanks. I didn't think of the sled weight, it's got to be substantial, more than the 20kg or whatever an Olympic bar weighs.
Also the leg sled I use does go up at a 45-ish degree angle.
I don't know the brand, sled weight, etc, I'll have to take a picture of it when I go next (maybe now? I have to be at work soon though).
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"...during the Lance years, being fit became the No. 1 thing. Totally the only thing. It’s a big part of what we do, but fitness is not the only thing. There’s skills, there’s tactics … there’s all kinds of stuff..." Tim Johnson