yeh i did my twin training in a seminole fairly recently and stuck to the book!! safest and really does get u the best performance (with that nice safety margin).....so the book says:
-Flaps up, trim takeoff range
-On the brakes
-Full power (greens)
-Accelerate to 70 kts (during this role we used to take up the strain so to speak by gradually increasing back pressure, this leeds to a nicer lift off
)
-Rotate firmly to achieve 75 kts thru 50ft
-accelerate to 82kts for obstacle clearance GEAR UP
-or- accelerate to 88kts if no obstacles GEAR UP
There is the allowance for a flap 25 short fielder which from memory i never did, never needed to.
cheers,