Corny as this sounds I practice with my emergency tiller many times a year and I even dock with the emergency tiller on a good windy day. If I loose steering I’m not going to flinch, it should only take me 20 seconds to regain full control and be underway and able to meet any challange.
My setup is unique, I have a 6’, 30 pound T made out of 2” pipe that sits right over the original tiller attachment. The reason for the height is to be able to clear the new binnacle and the weight is for strength. To fasten I just insert a bolt and hand-tighten.
Might be overkill but it’s worth it for me.