My two cents follow other comments... Right now, I like SA's clear intermediate for most beach work. However, line choice depends upon the depth of the water.
My game plan now is to work out the kinks in a sink tip presentation or spend the time and bucks to work on a shooting head rig with everything from floating to leadcore heads. That kind of a setup would also work from a boat. I think some of the new gel-spun lines in heavy break strengths would make good running lines. I've got some Spiderwire in a couple of versions in 50 and 100-pound break strengths that might stand up to the rigors of cutthroat and coho fishing.
Barring a shooting head system, I would think three lines would be necessary: floating, clear intermediate, and a fast sink tip.