So I tried my Chubby Boat today. It's pretty-darn tasty. But nowhere close to Fat Tug. I think you're right (or at least closer) with your hypothetical 4th batch:
I'll try that in a few weeks (got other batches fermenting and am with limited equipment/space)...
...a two gallon batch:
0.50 tsp Gypsum (Calcium Sulfate) (Mash 60.0 mins) Water Agent 1 -
4.4 lbs Superior Pale Malt (3.1 SRM)
3/4 lbs Munich Malt (9.0 SRM)
8.0 oz Caramel/Crystal Malt - 30L (30.0 SRM)
3.0 oz Caramunich Malt (40.0 SRM)
0.50 oz Summit [16.00 %] - Boil 45 min
0.25 oz Centennial [10.00%] Boil 45 min
1.00 Items Irish Moss (Boil 10.0 mins)
0.50 oz Amarillo Gold [8.50 %] - Boil 10 min Hop 8 10.7 IBUs
0.50 oz Centennial [10.00 %] - Boil 10 min Hop 9 13.9 IBUs
1.00 oz Cascade [5.50 %] - Boil 5 min Hop 10 7.6 IBUs
Hopstand @ flameout:
0.50 oz Centennial
0.50 oz Cascade
0.5 pkg Safale American (DCL/Fermentis #US-05)
0.75 oz Amarillo Gold [8.50 %] - Dry Hop 7.0 Days
0.75 oz Cascade [5.50 %] - Dry Hop 7.0 Days
I'll try that in a few weeks (got other batches fermenting and am with limited equipment/space)...