Brian.
Crazy question...........Do you need an Auxiliary engine? With a nice modern main engine (I see you had yours personalised with your age written on the back), is there really a need?
Have you had main engine issues? Do you ever use the aux outside of "giving it a run"?
I bought an aux for my first boat, before I even had the boat! Then purchased a new Johnson main engine so didn't even bother mounting the Aux bracket and sold the aux to a friend.
Many of the club boats only have one source of power, a good anchor which isn't tripped (or a way to quickly convert from tripped to secure) with plenty (100m of rode) should hold you should you get in to trouble.
There are often a number of members out and other non member boats who would offer assistance to a stricken craft. Just call Tom Bettle, he needs no excuse to leave his desk!!!
We have towed the occasional club member, haven't we Charlie!?
Rob