Rick,
I have a feeling that I'm going to piss some people off with this but I at least want to give you my opinion. The only reservation that I have on back-loading is this. If there are any warps, dents, or otherwise contorting features (like with the other torpedoes in the park), it may place the fish out of the tolerances it needs to be placed inside the tube. If you take into consideration the entire length of the torpedo, it would take less than a fraction of 1 degree of a bend (less than even the calibrated eye can detect) to throw it out of tolerance. Since the fit is so tight, we need to be absolutely certain that the torpedo hasn't shifted in it's dimensions before we manhandle it into the tube. It would really suck to get it in 3 or 4 feet and have it stick. You wouldn't be able to move it and you couldn't take away the support or it's own weight would tear it up.
Personally, I wouldn't recommend going this way at all but that's just my humble opinion. Necessity is the mother of all invention so let's see what other ideas we can come up with. We still have a few months to figure this out. I say, let's take it slow. We can always come up with more time but one screwup will cost us big.
Correy