It's too simple ...Hands off the thrust leavers at V1,. Passing thrust reduction altitude hand back on the thrust lever and pull it back to CLB gate if it's an Airbus .....And if you need additional thrust for what ever reason in between hand OFF and ON..Just select TOGA...It doesn't take ages to get your hands back on the Thrust levers.( It does take some time for people to recognize that they need TOGA ..But once you know it does not take long)..I have seen people in the sim retarding thrust just after takeoff when they have hands ON