Why do you want a leg raise?
they are almost useless…
Are you guys talking about hanging leg raises for the hip flexors and abs? I don’t think those are useless if you rotate your pelvis up. Louie Simmons wrote a lot about doing hanging leg raises for the abs. Leg extensions do more harm than good though IMO.
I thought the poster was talking about a leg extension machine- which is worthless.
I don’t know what ‘machine’ would would need for a hanging legs raise.
The arm slings to save your shoulders would be pretty cheap (to do the leg raises).