Free: Contests & Raffles.
As far as I know, the only time reverse is needed is if the grinder gets jammed and can't go forward anymore. Switch it into reverse and un-clog it. But honestly I'm not sure I've ever needed to do so in the 6 years or so that I've been using my Cabelas 1 hp grinder. Maybe once. But I definitely think you could get by without it, and obviously you do!
I got a bunch of food grade 55 gallon drums I bet would be handy for large batch of sausage. I'd soap them out and toss in a thick food grade liner. hrm
Looks like that might make things easy to move around when needed. Wonder how heavy/sturdy the cart is?