I'm fairly new and have been making basic IPA's and 2x IPA's with extract. I see many comments and suggestions of leaving in primary and adding another week. So in theory a basic IPA with 1 week in the primary and 2 in the secondary would be a total of 4 weeks in a primary without racking. A double with 2 weeks in the primary and 4 weeks in the secondary would be 7 weeks in the primary without racking. My question is do I leave in the primary and start testing SG before the suggested time and bottle when it reaches calculated SG or is it safe/better to let it go out to the maximum suggested time to achieve the calculated SG? My concern is too much time in the yeast... would the extended times more so for doubles effect the flavor if in the primary too long?