Stevo is on the money if you really wanna try using those dogs, Years ago a mate had one we took it out heaps and it had no problem lugging but it was heartbreaking watching it chase pigs in the open it had nothing on them, pigs would speed off and the little staffy's legs just couldn't make it, maybe in the real thick stuff they could be handy but be a bit of a worry grabbin a +100 kg angry boar with a 20 kg dog swingin!
Just my opinion and it will be interesting to hear other peoples experiences