Chris,<br>Thank you for your comments. It is apparent that you are an old Coast Guard hand and have good familiarity and experience with their equipment.<br><br>I do wear prescription glasses and could easily wear an athletic supporter in the cockpit. Steel-toed boots would probably work too but I think the motorcycle helmet might get in the way of ear phones and microphone. There is other protective headgear that is more suited for flying.<br><br>My dry suit does have reflective patches but no flotation collar. It would be worn during the flight so rapid donning would not matter (it does require some contortions to don). And, I've used it in iceberg-filled waters just long enough to determine that it provided adequate short-term thermal protection but did not do a thorough comparison with the tables (Tikuisis, P.: Aviation, Space, and Environmental Medicine. 68:441, 1997). That was the basis for my inquiry.<br><br>Aboard ship, where one has more freedom to move about, I totally agree with you. I would prefer an uncomfortable survival suit too. I simply found it hard to fly with and was looking for an alternative.<br><br>Thank you for your rapid reply to my posting.<br>Dan