This summer I started running on trails through the woods, and I'm loving it. Problem is, running on trails seems to involve a lot more lateral force on the soles of my feet, mostly from sharp turns and trails that bank the wrong way.
As a result, my shoes tend to slip around my feet. I've been tying them quite tightly to counteract this effect, but they still roll a little bit when I push off sideways. These shoes have been fine for many miles on pavement; the problem has only arisen on trails.
It's gotten to the point the shoes have formed themselves into a slumped over shape - this is the direction they slip due to lateral forces:
Is there anything I can do to make this pair of shoes hold up better? If not, what can I look for in my next pair of shoes to avoid this problem going forward?