Yes, you are all correct. 32 the smallest i have seen. The gold 32's are the best. Tying small, o k, must have a nice neck.
I generally tie a few hundred flies of the size 20, i can do the smaller but not necessary the way i fish. I like some water movement, those long pools of dead water, not my cup of tea!
First of all, the leader, a sleek design, maybe a 15 to 18 footer. Catch one and you better change tippet on the dead water.
The stretch, strain, will no doubt be noticeable. If you can see it and you do, well i am sure the fish see it too,
Unless it is big, why waste the time, When finding the big on dead pools, you must use all the tricks in the bag. You need to get him close to your mark. Striking zone. Piece of chicken on a overhead branch. when maggots start to drop, Big Daddy is close. Thats one trick. baby Mouse on a float of wood, pull mouse off when float gets close. Guaranteed. no need for 7x on this one,