Just got a killer deal on a Boom Vang.  Want to know what type of attachment points should I get?  Like the boom should I just get a one bolt boom bail and what size?  Also the mast, should I get something that will move to both sides or a mast hound.  It is a soft Vang.  Don't want to spend a lot but would like something descent, is that possible?   I will be installing this myself.  Thank You for the input.   Dick