I thought you were way early to even be asking the question....but after checking I see I am the one not right...... according to the http://das.wsu.edu website and for the info it gives me for Vancouver Washington, already 3% of the codling moths have hatched and in a week or so will start laying eggs. Here is what it says: (DD refers to the "degree days" they use for calculating.)

"Last Updated: 04/29/2014
Degree days since January 1st. = 208
(old: after biofix = 33 DD)"

"Current Conditions:
3% of CM adults should have emerged. No eggs have hatched, but they should start being laid at 225 DD. "

"Conventional Management:
If you are going to use an insecticide that kills CM eggs (= ovicide; i.e., Intrepid, Esteem, Rimon, Altacor), it should be applied between 225-325 DD. This approach controls early CM eggs as well as any leafroller larvae present. If you use an ovicide at this time you should then delay the first larvicide application to 525 DD."

That is rather technical and needs to be studied and thought about in context....but the troubling thing for me is knowing that although Seattle only has 178 degree days and thus we still have more time than down in the Vancouver/Portland area, that with the warmer weather this week, more codling moths will be hatched, and the trees are still in bloom here in Seattle, and some of our trees are just now coming into bloom ! Therefore, I know that by the time the time is right to put on the foot sox, there will already be codling moth eggs out there.....not many, but some.

Another could be to suffocate the larvae that are already inside on the next dry day with that paste I had been using (other thread) that prevents bud infections. They would have to tunnel out the stem and run out of breath. From previous experience I know the rest of the good fruit would not need air for a while so the rest of the fruits would remain viable? And for the other still unhatched larvae they would experience starvation, right?
-Let me know if you want to try some because getting places (even Seattle) is pretty common for me.