With the slight deviation in scale readings, and the fact that the kids have to weigh in with their singlets on, I am sure a tenth of a pound is making weight. A number of years back, had my son take off his boxers and he went from .2 over to making weight. Singlets probably average .4 or .5 on a scale. I realize it is not possible for these kids to weigh in buck naked, but being .1 or .2 (or more) over in singlets and underwear does not mean they are not at weight (buck naked). I think that there should be an allowance for these articles of clothing (have someone throw 100 singlets and undershorts on a scale and take an average weight).
Why should there be an allowance for the weight of the singlet? Competitors are forced to presently weigh-in with a competition singlet because that is the NFHS rules, and USAWKS specifically mentions this rule in the Kids Modifications.
It should be noted however that USAWKS does allow the director of sanctioned regular season tournaments to have weight allowances at their discretion, HOWEVER the kids modifications in Rule 4 addressing qualifying tournaments which would of course include the State tournament says "There shall be no weight allowances given."
So the only way you are going to get your idea accepted is for it to be presented before the State body meeting, voted upon and passed by that same body.
On the practical side, I think the idea is silly, as every weight class is then essentially bumped up by .2 of a pound or whatever i.e 46 lbs becomes 46.2 pounds and so on. What is the point of listing a weight class as 46 if in fact that is not what the scale is going to read.
A better idea would be to enter your child in a weight class they will have no issues with making weight when the time comes. Squabbling over a couple 10ths of a pound is really not worth the State bodies time or effort.