Single hand spey or trick casting can be done with any weight rod. I have done it on different weight rods. The key to doing it right or smoothly is to understand that while doing the spey cast, one must use the water as an anchor. To do it all from my own personal perspective, one must learn the SWITCH CAST. The switch cast is a hybrid of the roll cast. The different between the SWITCH and the roll cast is that, the roll cast rolls on top of the water and the SWITCH cast fly or extends into the air like the forward cast. After learning the SWITCH CAST, all other spey cast or Trick cast such as CIRCLE CAST, TRIPLE LOOP CAST, (CAD) CAST-CAST ALL DIRECTION CAST, VOODO CAST, SNAP-T CAST, then can all be accomplish. The bottom line is to practice because practice brings unison in fly casting.
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THE RIVER IS IN MY BLOOD, THE RIVER IS CALLING, I FEAR NO FISH THAT COMES MY WAY..........