If its not too much trouble, can you or someone else show a "typical" hop bill for an IPA and then show how you would brew it as an example using FWH?
I just brewed the BYO Pitch Black clone and it was ferociously bitter even after 6 weeks. 5 gallon bill looked like this;
16 AAU Warrior hops (75 mins) (1.0 oz./28 g of 16% alpha acid)
1.4 AAU Cascade hops (2 mins) (0.25 oz./7.1 g of 5.8% alpha acid)
12 AAU Warrior hops (2 mins) (0.75 oz./21 g of 16 % alpha acid)
0.25 oz. (7.1 g) Warrior hops (dry hops)
0.50 oz. (14 g) Cascade hops (dry hops)
Certainly.. I brew alot of IPA's, and DIPA's.. I'll change it up, hell even on the fly sometimes based on how I'm feeling it's going even.
I'm not at home with the software now, so I can't give precise IBU's, and ratios on the IBU:OG, which I typically shoot for atleast 1.00 I think.
For a nice citrusy IPA, with some clean bitterness that doesn't overtake the taste of the hops, I would do:
.75oz or 1oz of Magnum or a clean bittering hop- FWH
Once it's boiling, I would not add much of anything outside of say, 20 minutes.
So-
1oz Cascade @ 15min
.5 oz Simcoe @ 10min
1oz Amarillo @ 10min
.5 Simcoe @ 5 min
1 oz Citra @ 5 min
.5 Cascade @ Flameout
.5 Citra @ Flameout
.5 Amarillo @ Amarillo
I'd then decide what I had left, or used, for dry hopping. I'd toss the other .5oz of Cascade, Amarillo, Citra in the dry hop.
That would probably get you in the neighborhood of 60-75 IBU's, in a grist of around 12-14 lbs of grain maybe? Like I said, no software.. I brewed up something similar last week that was around 75-77 IBU's in a DIPA that'll ride around 8.5/9% ABV, with very little crystal in it.
The change is the "perceived" bittering I've noticed. It'll still have the IBU numbers, but doesn't really hit you hard. I notice the later additions better, and my aroma stays longer and it just taste more flavorful.
I'm able to bitter the beer where I'm comfortable and happy to balance it out, but I don't have to sacrifice tossing more hops in early and losing some of their value in aroma and flavor.