That's probably the reason they're not manufactured fernman, although my waterproof legs fit reasonably snugly round the ankle after I've closed the press stud (think flares converted to drainpipes-ish
)
Maybe the bottoms could incorporate a gaiter style design .... GUNWHARFMAN .... we need your inventive design skills.....
Happyhiker, I'm similar, if I wear gaiters and overtrousers, my legs just overheat massively - causes my achilles tendon (damaged) no end of trouble.