Join Date: Dec 2000
Location: west coast steelhead/salmon, BC/Alberta trout
medium-fast through fast progressive action two-handers have become the standards for underhand casting with shooting heads. Goran Andersson at Loop designs this style of rod, but you also see them in the stables of other manufacturers (the GLX rods the Syrstads designed with Loomis, the Scierra Two-Handers designed by Mortensen). Within the range "medium-fast through fast" there will be a rod action that feels best for the style of an individual caster, and for the kinds of fishing situations a caster prefers. I cut my teeth on medium "Spey" action rods when I was learning to cast, so I tend to like underhand rods a little more on the medium side of things--love the Loop Yellows, and the Loop Blues which are a bit faster than the Yellows, and the new Grays that flex like a Yellow but have the quick recovery of a faster action rod.
In general, the faster rods suit the underhand style with shooting heads because they perform very well when cast with the short, heavy head systems. This is especially true of the Loop rods as they are designed for underhand casting, and Loop also designs complimentary line systems to perfectly match each rod that they make. This was one of the main reasons I became involved with Loop--they have an angling philosophy that covers the entire flyfishing experience and they make complete tackle systems based on this philosophy. If you are interested in underhand casting you need look no further than Loop.
A rod with a more traditional action won't be as easy to underhand cast because you will need to really adjust your timing and avoid overpowering the rod with the short, crisp and powerful casting stroke that characterizes the underhand cast.
Stefan, I'm glad you like your Yellow for the Underhand cast--the 15ft Yellow is my main teaching rod, while the 14ft Yellow is among my all round favorite rods.