Fishing rod butt cup

I'm a carp angler and love night fishing, when i stood my un used rods up against my bivvy i was fed up of them butts getting dirty so between myself and friend we created this little thing. Peg it down at the front of your bivvy with a bivvy peg and stand your rod up in it and use the velcro on your bivvy to secuire it. A carp angler will now what i mean.