Sail power
Congratulations on continuing to sail into your golden years. I hope I'm as capable.I think that everyone that calls themselves a sailor should be able to maneuver a sailboat back to a MOB without the use of a motor. Kemo, if your wife can't do this, help her learn how. Admittedly, a motor is faster, assuming it works. But, it won't work if it can't get started for whatever the reason. I have an electric start motor and the electric start feature died just after I launched last week. Good thing my wife can sail the boat! Assuming your wife can get back to you, you said that she would not be able to bring you aboard. At the very least, she should know how to tie you alongside and use the radio to get help. Obviously, you will always be wearing your PFD. If your wife is not physically capable of the tasks required or, even if she is, I suggest that you consider yourself a singlehanded sailor whenever you're aboard. Consider installing a jackline and harness yourself (and her) to the boat at all times. The harness should be attached in a manner to prevent MOB.