I was taught that it is equally important to keep the rotation going in the 737 as well to ensure the flight path is as intended. Maintaining the rate you have been told to achieve (3 deg/sec in the 2-700) will NOT strike the tail if the speed is right. As Rainboe says, just adjust the pull (gently!). Another fault is people do not pitch into the pitch bar until well after rotate, presumably again 'worried' about a tail-strike?