hi i have one of these folding hand truckd that have a weight capacity of 150lbs. i' looking for a way of mounting it to my gk mb112 combo for easy transport, right now i've got them tethered with flat bungees, but not working to well, i'm thinking there must be some sort of bracke i could buy. i also included a pic of wht i'm trying to accomplish. the amp in the pic is pretty much what mine looks like btw. any advice appreciated dre'