OPK peak vs off peak?? Help!

Lisa

I've been reading a few Q&A's and i think I'm starting to confuse myself more! I see people are waiting for exactly the "peak" moment of ovulation. What does that help?? I mean, is it just to make sure that it HAS happened or is there a benefit to BD when it happens at that time? I just figured as long as you were Bdancing throughout the whole week of before and after ovulation was well enough. Is that wrong? First time through testing for me, i may have got too excited once i saw a dark positive line. What happens differently when the test line is darker than the control line?

Please and thank you!!