What's the saying? Opinions are like.. Oh yeah haha I've shot countless fall aways (I currently own 3) and wbs throughout the years and have found 0 difference in accuracy, and 1-2 fps difference through my chrono with blazers (which is irrelevant to me). I can shoot with extreme accuracy out to my max range of 40 yards with a wb shooting blazers. With all do respect, I'm not asking for advice on what anyone thinks is the best vane on the market, I ended up with a pack a heat vanes and was curious if anyone shot them in 3 fletch and was happy with the outcome, and so far there appears to be a few. I also stated that this will be with mechanical heads. With a 10 grain ring, my foc remains exactly the same with 3 four inch vanetec vmax vanes as it does with no ring and blazer vanes. My desire for a lower profile vane is a want, not a need. I just like to try out different set ups and have fun doing so. Honestly, I think I enjoyed shooting a lower profile 4 inch vane because it felt nostalgic. I'm having no wear, noise or accuracy issues with blazersYes, it was directed at you and it was a good question. If lower profile is your goal you risk stability unless going to a 4 fletch (and adding cost, effort and weight to the wrong end of the arrow). Profile is the #1 indicator of stability with fixed heads. The Heat vanes are simply too low of a profile to be appropriately effective for this purpose. The shape of Blazer vanes (whether you use Blazers, or Rapt-X or Bully etc.) is the best option on the market for stabilization. The Blazer vane has a profile that is 39% higher than the Heat vane which is really significant.
My recommendation for a lower profile 3 fletch that would probably work and is on the edge of acceptable is the AAE Max Stealth. The Blazer is only 14% higher on profile and the Max Stealth has a little more length. I've not tested myself but I've heard decent results from some others I trust. On the flip side, there have been many others (besides myself) who have objectively tested Heat vanes and reached the same conclusion I have. Simply not a good option.
If I were you I'd either get Max Stealth vanes and test them out or I'd dump the biscuit (I'm not even remotely a fan of them so I wouldn't be shooting a biscuit in the first place) and get a proper drop away so you can shoot the best vane options for hunting without being concerned about it.