Free: Contests & Raffles.
If there are more nearby, then yes. Don't be afraid to lay mock rub scent over the existing rub(s) and put a camera over them. A dominant buck cruising that area will smell a "new comer/interloper" and make a rub over your mock rub to show who is boss. Not my first choice, but another one I have used is to tuck a decoy (3D, heads up, or Montana silhouette) into the brush so its partially exposed them spray buck pee in the area and hang my stand over it. The idea is that the cruising dominant buck smells the intruder then sees the partial buck (your decoy tucked away) and moves in closer to investigate/challenge/fight. I like using this tactic in thick cover like sticker bushes and river bottoms (just like your picture). Best of luck!
A scrape is made in the dirt with hooves and peed in. A rub is done to a tree with antlers. Not trying to be a smartass just clarifying terminology.
Now that's what I call a good rub! That seems to be one seriously dominant buck ( if that tree has any size to it). Good luck - I hope he comes in for you!
Hey Bowtech - are you hunting late archery? You better get after that buck soon if it is still out making rubs. That behaviour is going to stop pretty quick and the buck disappear back into his core zone.... (so it is written) Good luck!