The ones I have go round the pastern above the overreach boot. Stops them from moving and avoids pulled shoes. i got them so OR boots stayed in place and it works!
I got some from equiport for a horse who kept pulling her shoes off out hunting even with over reach boots on. I used them with the hoof tape over them however they always rode up and ended up around the pastern so doing nothing. Also the hoof tape kept coming off, so although they maybe OK for a round of SJ not sure how much else they will stand up to!
Thats annoying- he will have them on pretty much whenever he is out of his box as his new shoes arnt cheap and I cant afford to replace them everytime he hooleys around the field. We are very lucky though- our fields are dry and on sand which should work in my favour. Have dug out a pair of pastern wraps anyway which he may have to wear with OR boots if the bands fail!