Any DSLR monitors around 3 inches?
Zacuto makes an EVF monitor that is 3.2 inches, and I can say from experience this is the real deal...Has built in sharpening monitoring to help with focus support, and has a detachable eyepiece...also look into their camera rigs fro your skateboarding videos, they could be really helpful for you.

http://www.zacuto.com/zfinderevf