That is a great shot of a polarbear in a snowstorm, I can even see the whites of his eyes! It's hard to tell with the glare and all, but there might be a touch of gray to his head, What do you think? Hmmm? Now, with a buck that's running dark, he will come out in the daylight, when he thinks there is something that he wants that is only there in the daylight. I would suggest one of those scent drippers for a licking branch, if you can find one, or create your own, with a mock scrape, the licking branch, and the scent dripper togeather. If he believes that he has a house guest duing the daytime, he will either want to meet her or fight him depending on his temperment and where the rut stands, and the voices in his head at the time. I don't know what the best scent to drip at this time in your area would be, but someone else is likely to address that issue, and good luck!
The only real difference between a good tracker and a bad tracker is observation. All the same data is present for both. The rest is understanding what you are seeing.