Just a little bit unrelated to the topic of this post, but I just though of it.
Say that a lifter is supposed to lift in the 100.0kg class (old IPF weight classes).
So he goes on the weight 3 hours before he is supposed to lift, and he's slightly dehydrated. He weighs in at 100.0kg exactly. He quickly eats some salt tablets (or whatever tricks the experienced guys use), eats and drinks a lot. When it comes to the start of the lifting, his weight might have increased a couple of kilos.
So now he is 102kg. Another lifter weighs in at 101kg and has to start in the 110kg class.
So would it not be more fair to have a weight that the lifter have to step on every time before a lift
to see if he qualifies for the correct class? In the case pictured above, we have a lifter at 102kg competing in the 100kg class, and a lifter at 101kg competing in the 110kg class.
So for instance a lifter sets a new record in one class, and he actually is 2 or 3kg over the limit for that class, should the record be valid?
I know the rules are like that the weigh-in is a few hours before the meet, and of course there's hardly any advantage for a lifter to drop weight before a meet, but some lifters have done this countless times and state that they do not lose much if any power from the procedure.
So, in reality it's not effective weight classes on the platform. The weight class is all about making a certain weight at a certain point before the meet starts.
Perhaps height-classes would be better? -160cm, 160-170cm,170-180cm,180-190cm, 190cm+