I do not own a drysuit, nor have I dove in water that cold yet, so I will take your word on that. If you feel that’s the case I’d hate to meet you there just to have to call the dive within a few minutes. I will be diving in Kentucky the weekend before in waters close to the same temp (low 50’s) with a few friends that dive there year round without drysuits. If it’s all the same to you, I can contact you again after those dives to see how things went and to see if it’s worth meeting at the quarry in Ohio. I’d just feel really bad to have you drive all the way there just for me to call the dive early.