I have grazings all over the place, and so any handling system I have needs to be mobile.
Until a month ago, I had 14 hurdles, all 6' in length and some flexinet - I have managed to get 50 ewes and lambs (94 lambs - so 144 animals in total) into this for weaning. If I could make an improvement, it would have been an additional couple of 4' hurdles.
I haven't got a picture, but I'll describe it thus:
Set it up along a fence, so the sheep go in uphill if possible. The far end should be one hurdle wide, withthe next hurdle runing parallel to the fence. If I had 4' hurdles, I would use one here.
Then arrange in a funnel, making sire they dip in towards the fence 2 or so hurdles from the end, then set the last two almost parallell to the fence. run your flexinet out from this to make a huge funnel. Save two hurdles and attach to a fencepost opposite where your hurdle funnel ends, running almost alongside the fence.
Drive the sheep into the funnel until they have gone past the outer hurdles, then dash in and grab the outermost one, tug the lot round like a gate and attach to the two hurdles you attached to the fencepost - your colleague/dogsbody should be pulling these in as you pull yours along.
Your sheep should now be in.
then, by detaching hurdles and sliding them along the backs of the others, make your pen small....
Use the 1 x 1 'far end' as a handling pen, attach some of yoru spare hurdles a bit back from the handling pen and use them to force the sheep...
This would make farm more sense with pictures...I'll try to take some...
I have now expanded and have a Rappa trailer mounted aluminium one, but only because I'll have 200 ewes (plus lambs eventually) on one bit of ground in future. I use it for the first time tomorrow...woohoo....