"One man riggers" are a great investment. Get one with lateral (side-
to-side) adjustment.
As mentioned before, with practice the AS-W15 should be pretty easy
to rig by yourself, with any of the riggers. You could build a drift
pin or cam-shaped pin out of Delrin as a rigging tool to align the
spars. A 15 would usually not have a trailer with adjustable ramp
height, so you'll use the jack in the rigger.
With a glider that doesn't "slip right together" you'll enjoy having
the rigger supporting the wing while you scratch your head, instead of
a friend who might be harder to find next time.
Lasers sound a bit complicated. If you need a reference line, while
the glider is rigged draw fore/aft and top of spar lines in the
baggage compartment with a magic marker.
DOH! Come to think of it I don't remember if there's a place to draw
lines in the 15.
Jim