sut spare tire carrier

[MONSTERMATT]

wondering how i can "snug" this spare tire up against the truck a little better, it vibrates and shakes when it gets bumpy and dosent look too "tight" anybody have any ideas how to strenghten this thing? i like the full size spare on the back and it looks cool from the rear but from the side it "sags" any ideas, it would be nice if somebody made somethin for the people that want to run full size spares on the rear w/o lookin kinda lame, im lookin to not only stop the vibration but bring the mount closer to the truck.