Usually I use 2 or 3 elastic hairbands to try to keep a little bun in check. Back in my dancer days, it was a few bands and whole handful of bobby pins to keep things sleek and secure. These days, I embrace the style of a messy bun. Because it's easier. And it looks a bit more relaxed.
So. About those pins.
Here's how I roll with them (I've been living with these lovely little buns for 3 days now - I see many summer days bonding with my spin pins).
Normally, with a messy bun put up using a few hairbands, I fix it every couple hours and re-make it. Yesterday I wore a bun made with the spin pins for about 16 hours. 16 HOURS. For a long-haired girl like me, it's a summertime hairstyle miracle.