Thanks for all your (amusing) replies!

I did think about a net hammock but then If the sheep panicked and wiggled around im pretty sure its legs/head/ear tags may get stuck/come off...
Also yes with piglets and lambs I can just pop them into a sack and weigh that but these are large lambs and I am not very big and strong, I can tip sheep/shear sheep all fine but I just cant lift them up! I was thinking about using to weigh my kk pigs aswel, as I always have to guess thier weights for injections. And they dont weigh as much as bigger pigs (the smaller ones) so I could use the weighing/gallows for the piggies aswell

Yes the idea was to scoop the sheep up into the groundsheet/canvas that has metal rings at each corner and hang it on the weight spring. However I clearly remember as a child tying one up in a tree and sitting in the middle, and not long after falling through it and hitting the ground! (with brother and sister landing on top!) so I dont trust the strength of the canvas to be able to pick up 40-50 kilos of live wriggling lamb!
I cannot use a weigh crate as I simply cannot afford one and then cannot afford the hurdles/race to go with it
I will attempt to create a harness/net/something and see how it goes! I will keep you all posted
