I have been incorporating belt squats into my routine. I don't have a machine so I have been attaching a dumbbell to a dip belt and squatting off of two boxes. However, I am now ready for more weight than the highest dumbbell my gym has. I have been attaching 5's and 10s, but that is not working real well anymore. Some folks had told me to attach the dip belt to the low rung of a cable station, but I find that is pulling me forward more than pulling me down. I figured this board might have some experience so I am looking for any recommendations on a good method to do these when you are out of dumbbells. Thanks in advance.