airport analysis and full thrust takeoffs

[OVER THE TOP]

Have heard some conflicting opinions with regards to using the airport analysis for a takeoff when not using the assumed temperature method of engine derate. ( Ie full thrust )

In some cases the limit weight will be significantly greater than the actual weight on the day.
In this case do you use the speeds associated with the full rated takeoff or do you use the speeds associated with the actual weight.

I have flown for operators who have used both methods but never read anything in the manuals that covers this scenario.

Any info, references or explainations would be helpfull.

Thanks