I used to have a clogged nose a lot and found putting my attention at the nostrils was better, then I could closely monitor the sensations there and my reactions to them, trying to place my attention elsewhere just led to the nostrils becoming a distraction.
if you haven't already I'd look into Jala Neti or the modern equivilent Neilmed as a possible remedy, it helped me a lot.
"Whenever we feel that we are definitely right, so much so that we refuse to open up to anything or anybody else, right there we are wrong. It becomes wrong view. When suffering arises, where does it arise from? The cause is wrong view, the fruit of that being suffering. If it was right view it wouldn't cause suffering." - Ajahn Chah
"Remember you dont meditate to get anything, but to get rid of things. We do it, not with desire, but with letting go. If you want anything, you wont find it." - Ajahn Chah