Slasher,
I understand that the NET gradient still stays at 1.6% (Gross Gradient for a 2 engine aircraft 2.4% - 0.8% = NET Gradient of 1.6%.) You still have to achieve this Net Gradient in a bank turn. The turn will decrease your gradient (B737 Flaps 05) by 0.5% which you must account for. We normally do this by increasing the obstacle height or the Net Gradient of 1.6%.
I haven’t found any reference to a minimum of 1.0% NET.
Hope that this helps.
Mutt