Mary
We had tethers on our boat made by pulling out the core of a 3/8 line and replacing it with shock cord. This way the tether would start at about 6’ and stretch to 12’. We carried them in 2 Worrells but never used them in fear of getting tangled up with the boat. If we did use them I would have attached the tether to my full trap harness.
Kevin
We did carry a throwable in the hull, but I don’t think they make much sense on a cat unless you have a pocket sewn on the tramp. Why would you need it with both crew wearing life vest and safety gear. I would never try and throw one to a person over board, I would rather try and keep control of the boat to prevent a capsize and go back and pick them up. What good would it be for the MOB to have a throwable with the other crew capsized and drifting away?
In last years Worrell we went out to practice and I had replaced the trap lines on the boat and Carl went out on the wire and the line broke. I had to take control of the boat and turn around and get him. After picking Carl up we thought we would try the other trap line and it broke and I had to go around and pick him up again (the winds were around 15 mph and I weigh 160 lbs and Carl is about 225lbs) The life guard on the beach kept yelling MOB, MOB and everyone on the beach was watching (kind of embarrassing).
Just my thoughts