I have a vasectomised hob and 7 jills mate, you'll need a seperate cage otherwise he'll end up skin and bone from shagging himself silly .
I put him in a seperate cage and put 1 jill with him at a time giving him a few days rest between jills.....
another member said the same to me few weeks ago,ma hob has lost alot of weight since.i thought members left the vac hob in all year round.......
few members on here leave there vac hob in with there jills all year round i put mine in a cage of his own when breeding season arrives so he doesnt loss to much condition a so visting jills