looking great my friend. to my experience and understanding foxtails are just one of a few structures buds form, some strains do other dont, its obviously a trait carried by the sativa lineages from very hot and humid places so buds dont mold as easy. that being considered many of the modern hybrids we all grow where chosen in part by their bud structure, usually big chunky phat buds, but the DNA is in there and if you provide the right environment the trait will show up, for example in very hot climates plants that dont usually foxtail do, and this is where is seen as a problem but in my opinion theres not much difference in actual density because those little foxtails get dense and fat just in a spikey shape. anyhow thats my opinion