here are some pics of the whole setup, very sturdy indeed now, the benbo trekker III is awesome, barely moves in the wind due to the stability gained by the wide base on which you can set the spotter. by setting up the spotter upside down, the spotter hangs from the tripod and sits in a solid position. here are some combinations - can be set to barely off the ground so you dont break your neck while watching.

http://pic60.picturetrail.com/VOL177.../370991799.jpg
closeup
http://pic60.picturetrail.com/VOL177.../370991807.jpg
standing- i could also extend the legs to the full and have it hanging upside down rather than this position which is more susceptible to wind.
http://pic60.picturetrail.com/VOL177.../370991804.jpg

and if it rains, just place a piece of impermeable cloth over the base of the tripod and keep spotting and shooting. truly a versatile setup
http://pic60.picturetrail.com/VOL177.../370991801.jpg
. tripod weighs 2 kilos. due to it versatility, its well worth carrying.one can spot while the shooter can rest the rifle on top of the upper intersection so that he shoots while you spot.
alternatively, you can use it simply to rest the rifle on while taking a shot.