I have discovered that if I shave my hoo-ha and collect the residue off the floor, (from the shaving, not all that other crap that was on the floor before I started), (no, I'm not taking pics for proof of previous residue, shaved residue, or results of shaving), If I place the total amount on a scale, there are absolutely no results. (as far as a numerical increase on the scale) I have tried this after days, weeks, months, and even years between shavings.
As a result of these studies, I have determined that no matter how much is shaved off, the end result is always the same. She smiles more as she passes by, whether this is silent laughter, or a mischievous gleam in her eye makes no difference. I always seem to get better results after the process is complete performance increases. I tried wet shaving residue wieghts once, but I suppose I shouldn't have used a digital scale for that, pop, hiss, yup, had to buy a new scale.
So, my final thoughts are, wieghts don't matter so much as fun factor.
As far as Vohk's efforts, thank you, I do appreciate a little honest comparison, realizing variables exist in this world, You did add to my insight as to the two sleds shop wieghts. In all honesty, it is a factor I have thought about, however, due to money and fun factor and simply seeing now as not the time for a change, I continue to love my 2011 m8 turbo, don't have a clue how much it wieghs at ANY time, yet doesn't seem to matter as the various vegetation, rocks, missing a-arms, snow load, lunch from the sled next to me, etc. constantly changes, up,or, down goes the wieght, (I swear I crapped a five pound sausage omelet one morning @ 10, sled wheelied off like it was a, ur, I mean had a five pound lighter rider on it, no more cramps and a fun day was had by all.
SO, in keeping it short, Variable wieghts will very much vary according to their variables. Invariably.
Hope for some this was invaluable.