Martin, I think end first into the wind is a more streamlined face to the wind but there are pullouts along each side of the arch sleeve to resist side deflection too. As for wind speeds, probably something on the order of 40 mi/hr (65 km/hr)is about all I've experienced with the single pole setup. The crossing poles do add a substantial amount of fabric support and I have no doubt the the Scarp will take higher wind speeds with those installed.
Roger, the inner tent is 86 in (218cm) long with 15 in (38 cm) vertical end walls. Width is 32 in (81 cm). Peak height is 39 in (99 cm).
-H

