Try using a palomar knot. I've always had excellent results and use this knot for almost everything. One thing I read showed a better knot strength over the clinch knot too. True or not, I don't know, but kings here on the Kenai have never broken me off at the knot before with it!
The past couple years I've tried some Yozuri Hybrid line on my Kenai R. king rods. Seems to hold up pretty well and is pretty abrasion resistant, but has quite a bit of memory (a lot like maximas chameleon), which I don't like for a main line. Think I may look into the Ironsilk line as well.