Hi,
Riding a bike where you can't reach the ground is very easy.
Much easier than trying to ride from the saddle all the time.
Stopping and starting is safe, simple and secure.
Just get out of a saddle when you need to.
http://sheldonbrown.com/starting.html
A small skill to learn for optimum pedalling.
rgds, sreten.
KOPS is for road bikes, not sit up and begs.