booties wont stop your feet from getting wet as the water will run down your shin into your shoes. However booties will stop your shoes getting road grime all over them, being warm is part of the problem as bacteria loves warm wet places, come to think of it so do I ;-)

When I used to work for a living(construction) the steel cappers used to give me tinea due to shoes not breathing well. Canestan foot treatment that comes in a bottle of liquid you can drip all over your toes got rid of the problem. Powder and sprays never did squat for me.

I've heard daktarin works well maybe try that too, although I havent tried that.

The key is your feet being able to breathe, a bit hard when wet. Best thing is post exercise treatment, Get your feet clean and dry and apply a tinea\athlete foot treatment, one that keeps your feet dry is best, and don't wear shoes for as long as possible unless absolutely necessary.