Nobody haven't adviced to trim out the aircraft plus you really have to anticipate things- for example if you wish to slow down a few knots, then as soon as you see speed decreasing you'll have to add throttle just a bit to counter spool-up lag and same applies when you're going too fast as well. Same goes for pitch axis as well. In short, keep your plane trimmed out for that speed/loadout and anticipate speed decelrations/accelerations.