Some sloppy math says that Ryan's end hoops, at 6 feet (each), would be as long as the the 6 feet total of TT's carbon tube, around two times the weight using the best Easton prebent alloy tube, and would not provide nearly as much head and foot space at the end walls as the Scarp. On the plus side, agree with the point about the 3-hoops on aesthetics, maybe more wind stability, and a need for only one stake at each end for conical end covers. When GoLite got into a similar three hoop design a few years ago, though, the weight went off the charts, a bad precedent.
The problem seems to be the diminished end space using low hoops, and how small a radius carbon, as distinguished from prebent alloy, can be bent to without breaking when the wind adds additional stress. This is a problem Roger Caffin faced with his tents, and may be why he elected to use the elbows for his carbon stick-things, to create more head and shoulder space without over stressing the carbon. Has anyone tried to intersperse prebent alloy sections with straight carbon ones in order to get an almost hoop shape at lighter weight than all alloy?
One question may be how Ryan would like mini versions of Roger's penta hoops at the head and foot ends. Somehow can't see Ryan or TT going for that. Maybe the aesthetic thing at work again. If they ever figure it out and start making filament wound curved carbon tubes of high quality, game over. Form and function would meet.
EDIT: Oops, forgot about the additional stick-thingy (carbon tube strut) that goes in the center of each end of the Scarp. Adding that brings the strut weight up closer to the weight of an alloy hoop. Using prebent Easton nanolite 344 tube instead of 340 would lower the hoop weight, further reducing the weight difference. The small hoops could be lightened still further by using carbon sections at the center and ends of each, and using two prebent alloy sections between them, so the hoop would be skewed a bit outward at about 12" height, and provide more space for head and feet to move sideways. We can make our own prebent alloy sections, using packed fine sand, but they will not be as durable as a section prebent by Easton before tempering. Whatever the issues might be with this approach, the final product would be better than the use of straight struts used in many configurations on the many versions of the center hoop, side entry tents that abound. So agree with Ryan's disfavor of the sticky-things.
Reflecting on what configuration of sticks might work best on the ends of an Akto is kind of fun, but smaller end hoops with conical end covers that both tension the tent and provide well-protected venting, always seemed like a better approach.