I had 14 LMB 12" to 14" in 7 bag 90min drive and I did released them really good and they were in perfect condition, But I had 12 of them death in first 48 hours. The reason was the lake temperature was high. about 3 months later when weather get cool, I did get 2 of them for the test and both survived. So in my experience putting them in bag with pure oxygen is fine, But the lake water temperature is very important, You dont want them have thermal shock.
