Still, to stay alive for 20 kills while using the glider, try using it as a short burst, highly mobile set-up that can get you to a health station, cover or behind the enemy lines very quickly.
Anyway, I don't think I have found a "cheap" loadout yet, except whatever is killing me at the time. ;P
That said, I do have a special hate-on for the speedy skater. I cannot hit that!! In fact, my only two nemisises (sp?) of the week were both this type. Ugh.