In reply to Ildiko:
As per previous posts ankle suport from boots seems dubious. The following is from UKC forums: Trail runners vs hiking boots.
"My partner works for a company that makes many of the boots that you buy for hiking. ..... they regularly joke about it. "Ankle support" sells boots, but doesn't protect your ankles. .... The only reasons for wearing high boots are a) warmth, b) waterproofing and c) sole stiffness for crampons. Equally, I work in the forces and a particularly pointy part of the forces where we spend a lot of time on our feet. Ankle MSKI due to boots being low is being debunked and people are regularly running long distances with weights from 15-30kg and little to no "mechanical ankle support" and mski are reduced."
If you really need ankle suport then maybe you could get professional advice on orthotics, but you probably have ample time to strengthen your ankles before your May hiking as suggested in the previous replies. I increasingly find I like lighter footwear which helps me place my feet more precisely (and decreases fatigue).
Personally I still use high ankled boots but it may be that they feel better because the high lacing helps grip the foot better rather than giving ankle support (somewhat similar to the heel cups in another reply).
As mentioned in the post from NZ, goretex etc=slow drying if water gets over the top. I don't know if anyone ever considers carrying some form of beach type footwear just for river crossings. Incidentally it may be flexing hiking boots are particularly likely to stress a water resistant membrane compared to stiff soled mountain boots
If you liked your Salomons and don't blame them for your ankle fracture then perhaps a replacement pair or even just try Sealskinz socks in the old boots first (I sometimes use plastic bags but unlikely to appeal to many!).