I use the 11 cog frequently. It would usually be useless for me in the big chain ring because I don't have strong enough legs or a big enough hill in Houston. I did use it once with the big chain ring when I had a powerful tailwind. I use the big chain ring when the 11 cog isn't tall enough. I don't have to trim shift unless I use the 2 smallest or 2 largest cogs in conjunction with the small chain ring.

I typically keep my cadence between 90 and 115. this range allows me to work around the lack of the 16 tooth cog.

The front derailleur shifts really well, but the 34 ring works for me most of the time. Maybe I will get more chain life if I double shift.

I like these discussions with seasoned veterans like you because I may find a better technique. I have learned a lot from you. You were a big help when I was buying my Roubaix Expert.