Maybe for some people. I started off with the 3 to 4 hour nap when I started doing international and found it didn't help....still couldn't sleep later on in the evening a la circadian rhythm. Now I just sleep until whenever I wake up with the nap...and try to stay as close to home time as possible. That's worked wonders for me.

I agree with Denny...sleep when tired. All the tips and hints other guys give aren't science and might work for them but not you. There's no right way...only what you feel is best for you.