I am sure it has been discussed before, but I couldn't find it in any recent posts. My question is at what outside temperature should a composite bat be used without the risk of damage? I have heard 60-degrees and as low as 50-degrees, but it is the time of year when these temps are pretty common here in South Texas. I would like to start hitting off the tee and am wondering about anyone's experience with cooler weather. All my bats are broken in so they are ready to go. I have Miken, Hyper-Z, Worth and Reebok bats. Please advise.