When I used to do sweaty workouts with hair not yet at my waist, I would put it in a cinnamon bun with four mini claw clips. At waist or longer, I did this:

Gather the top half of the hair into a swirly bun (I have instructions on this board somewhere) and secure with a hairstick. Take the rest of the hair and wrap it around the bun, securing with four mini claw clips all around. This lasts the for the whole workout for me.

These days I have stopped doing sweaty workouts; I prefer yoga and bellydancing. For the first I put my hair in a bun, and for the second I like buns, braids, or even hair that is down.

Ooooo, good topic!

I have shortish hair (mid-neck or so). I wear 2 pigtails when I work out. French braiding would probably work too, just to keep hair in place while jumping around. I just recently got a Vespa, so I am also trying to find solutions for helmet hair.  I'm thinking that French braiding is the way to go until hair is long enough to braid normally. Have you tried that?

As for the sweat attacks, I reckon that Bikerbraid's solution is about the best you can do. At the MC shops I've been to they've all recommended those moisture-wicking caps to 1. Keep you drier and ultimately cooler and 2. Extend the lifespan of your helmet. Considering I just forked out over $200 for one, I sort of want it to last!

Let us know how those caps work if you try one out!

/Kate