For you guys shooting the 60x120 4 fletch what size flecth do you prefer and do you fletch helical or straight w/ offset? So far for me the 4" helical is producing good results.

I think anything more than 4" feathers in a 4 fletch configuration is overkill. I don't use the 60x120 setup anymore but when I did straight or helical clamps did not produce a noticable difference to me. I prefer the 75x105 for my 4 fletch setup mainly because it seems easier for me to replace individual feathers if needed. I personally do not notice any difference in arrow flight between the 60x120 and the 75x105 configurations.

I use the 75x105 it seems to give me better rest clearance. Feather is 4" shield cut with helical.