In my situation-- where I check both cows and heifers- tag and weigh- around 6AM- again maybe at noon- and again before sunset- this would become a major pain in the butt if I had to be there guaranteeing every calf could get some air...
Definitely sounds like something the cow scientist/experts should get on---
BUT sometimes I would not expect results for some time-- as it took those folks years to find out that in cold winters we had higher BW calves--- and some of those "experts" still refuse to believe it....