Sorry Andy, been offline for a bit.
Yup, whenever I use it, I plonk it on the cowling (away from the compass) and off I go. I did shell out circa £70 on a yoke mount and used it half a dozen times at most.
I like this way because I tend to have it on, in my bag or on the seat, and only use it if I'm in need of a second opinion about where I am.
I also find that sometimes with the yoke mount, the signal is poor.