Originally Posted by POK
3) Swim outside your comfort zone on shorter repeats. You may find that you can manage 50s on fairly short rest while holding your mechanics mostly together at faster tempos. Don't worry that you can't sustain these tempo/stroke count combos on longer swims yet. Stick to the 25s, 50s, 75s, maybe 100s until you adjust to :02-:05 faster than your current best tempo.
4) Don't be afraid to go fast. What may seem fast and sloppy is often just "unfamiliar." The feeling that you've abandoned your skill set doesn't always mean you HAVE abandoned it. Sometimes it just means your body is unaccustomed to how reliable mechanics feel at higher intensities.
So true, that's what I'm recently doing and realizing. Moreover, what you describe on point 3 sounds pretty close to USRPT, you could be interested about it.