Kicker makes CA harden almost instantly. So you can put a drop of CA between a rib and a spar, kick it and go on to the next one. No need to pin it in place.

This is why I like to use a wire to add a drop of kicker instead of a sprayer: If you sprayed the ribs, the kicker goes everywhere - and it has a residual property. So a day or two later, you may be adding sheeting to the same area and the glue hardens before you get the sheeting down.

Also note that you should not use Kicker on THIN CA - the Thin CA can foam up and make a big hard knot.