I actually Love the Turbos. I find them to be more forgiving than the feathers I shot before. FOC isn't a worry with them though as you have such a spin it just makes the FOC calcs irrelavent.

The hunters will stabilize fixed blade heads but only the smaller ones. I've shot NAP Nitrons and Wac'em archery Triton heads both at 100 grains and stack them up at 50-60-70 yards.

They are a little heavy but the hunters weigh in at real close to 50 grains...but they're longer than a conventional nock as well.

SO...you can cut 1" off the arrow -6 to 10 gr
You lose the fletch -5 to 12 grains each
You lose the nock that's already there so figure -12 to 17 for a carbon and 20 to 30 for a Alum super or G

You can effectively have the same arrow weight and same POI as before if you were really wanting that.

They're GREAT for windy days though as they really cut through a crosswind better than the hardest hellical. Good for "open space" hunting for Antelope, MUleys and Whitetail on the prarrie or anywhere else the wind is factor.