When there is concern that this may not be the case, trim brakes are added (hence why there are a few on Behemoth). These brakes will often grip the train halfway up the hill, so that the front, middle, and back all experience the same forces.
UC, look, I rode Behemoth in the front, back and middle on consecutive trains in two different sessions, and I'm sorry, but that's just not true. There IS a difference in the forces. Of course there is. At any given point on the hill the front, back and middle will NOT pass it at the same speed, therefore, different forces are produced. Without it doing the whole hill at the same speed (basically, being a powered coaster) there is NO way for what you're saying to be true. It's why going into the top of the hill you would be lifted up strongly, and then going down off it, the airtime would stop (and vice-versa for the back). Conversely, in the middle, it's pretty much constant (that constant 0g can be found there).
See what I'm getting at? The front car will hit, maybe -.5g? Maybe that's a bit generous for the "normal" B&M Hypers, but for Behemoth, I'd put that about right. That's when flattening at the top of the hill (you're pushed UP, producing airtime). Then, the middle gets about 0g over the whole thing (what B&M wanted, but can only truly get in one row). Then, the back will hit maybe -.5g leaving the top of the hill, and more then 0g flattening at the top.
To say that the front, back and middle all produce the same forces actually suggests to me you've never ridden a B&M hyper, or any of coaster for that matter.
Oh, and SFNE's Catapult restraints? Go into the Mumbo Jumbo topic, read all the bitching in there about how they hope it doesn't have Slammer's restraints (an IMPROVED version of Catapult's, I may add), and yes, I'm the only one bitching about them. Oh, and I mentioned two of the four people I rode with didn't have problems (yes, I wasn't specific), but the forth person DID, and other people in the larger group DID have problems with it. Quick side question, is it true they've finally removed it this year?
And my body shape actually has very little to do with why I don't like ejector as much as floater. Why would the size of my belly have any effect on the sensation in my thighs (for reference, my thighs are actually comparatively large when compared with the oddly shaped stomach I'm referring to when talking about Catapult, and would be counted as a normal shape).