So I brewed my second batch on Saturday night. It was a Brewer's Best American Light extract kit. I started by boiling 2.5 gallons of water then added my LME. Things were going well. Then I added the hops and all of the sudden, I lost my boil, as in I couldn't make the wort boil. I boil on an electric stove and had it turned up to high and until the hops were added everything was boiling away. Finally about 15 minutes after I added the hops, I got the idea to cover it and that seemed to work and I didn't have any boil overs. My question is how will this effect my beer if the instructions said to boil the hops for 40 minutes and I wasn't technically boiling for 15 minutes. In hindsight, I should have stopped the clock but I wasn't that smart unfortunately and just kept it going.