You are using a two hander and the flow rate is 335 -375,try a few Airflo 10' Polyleaders starting at fast sink an go up depending on the water you are fishing, if you doin the tailouts a intermediate or slow sink will do fine anything deeper will require you to get that fly down an show where they can see it usually closer to the substrate,water temp is everything where applies to fish,and steelhead are no different than any other fish,when its colder the fish are more lethargic..doesnt mean they aren't hungry an won't take a fly presented properly.
Also if i may,Malinda is a True lady an runs a great shop and can fish as well as she runs a business.She has Rio
Spey Versa leaders i bought a few because at that time she didn't have any Airflo stick to a 10'er i think you will be better served unless you are going to the Oswego ,Gennesee, or Niagara,then the longer leaders come into play there.floaters will probably be a waste of time unless you have dry action which does happen but i bet youd hit the lottery before that does.
buy from fast sink an to extra super fast in the Airflo,and 2.6,3.9,5.6,7.0 inch per second sink rates in the Rio
Spey Versa Leaders.
im all new to this poly leader thing but i tried it this fall at those flow rates an these leaders kicked butt i am very fortunate to have the great bunch of guys on here that helped me to get in the game an figure these things out so quickly an the success i had enjoyed this fall in such a short time..one thing use maxima or seaguar flouro for tippett.
Tight Wraps & Tight Lines