realskiers

One thing I have noticed is that, presumably, a powder ski performs better with a narrower tail than shovel. This I believe is so the tails can release in deeper snow much easier. I've seen what Icelantic has done and Skilogik just to name a few and I wonder what the thoughts are behind having a tail nearly as wide as the shovel.
Thoughts?

Gary:  I find that my SuperShape Magnums are about all I need on the east coast. 72 under waist.

I'm not a good enough skier to assess your presumption about narrower tails, but lack of knowledge never stops me from posting an opinion.  Maybe the narrow tail concept is from a day of needing to keep the weight back to help keep the tips from diving and is really no longer needed with wider shovels and other powder assist technologies?

By the way, congratulations on your new skis. "No confusion on this one, a pure, superb powder ski."
The DPS Wailer (aka yellow banana) is, I believe,  141/112/128.  (tail 13 mm less than tip)

Ullr's Chariot: 145-101-131.  (tail 14 mm less than tip)  similar tip/tail, much narrower waist.
The Shaman:  160-110-130   (tail 30 mm less than tip)  similar waist and tail, much wider shovel than yours.
Blzd Bonafide: 135-98-118     (tail 17 mm less than tip)

My guess is that its a versatility trade-off. The Ullr's Chariot wider tail gives you shorter turn radius on the groomed, but maybe with some sacrifice as far as powder performance?