In reply to buzby:
Hi Buzby.
As the poster said above, ski boot type or winter plastics may offer more support if you're ankle is so ' dodgy'.
Otherwise, a lighter shoe may offer more feel for the ground, reduce fatigue, and allow biomechanics to work properly.
Have you had your ankle looked at?
Maybe footbeds and proprioceptive/ strengthening work could improve it.
I used to get a lot of ' inversion injuries' where your foot crumples inwards using 3 season boots all year around as this was the general consensus in the past.
I found this didn't happen wearing approach shoes.
Still see people in big boots on pathed terrain where even ' hill sandals' are adequate.
Maybe get your ankle assessed before trying this.