I agree with you brother. There is a way to wear a penis elongation wrap when you are at the gym (or a sleeve). But if you are doing exercises like, Concept2® ROWER or any exercise where you fold your body together, there is a high risk for the elongation metod (sleeve/penis elongation wrap) to slip off, or not work at it's most effectiveness since the penis is turtling.
If you stress during the workouts turtling is going to happen. Your body do not need an erected and elongated penis, when you are in a fight and fligth state. The body try to protect your penis in this state.
If this is a problem, you can remove the elongation device before the workout, and put it on immediately afterwards. This will not affect your gains if you otherwise have the penis elongation going for the majority of the day.