I do not have the manual in front of me, but from memory.
B757
0deg to 11deg control wheel no spoilers
11deg to 55deg control wheel, spoiler on the down going wing deploys as an inboard aileron.
On swept wing jets it is very important to have into wind aileron on take off and upto 55 deg control wheel will not increase drag.
With experience the amount of deflection required can be jugded by the amount of rudder required to keep straight.
At lift off all is revealed and then roll must be corrected if nessesary.