Always trot from standing position as float control is the most important aspect of this style. Regular feed draws the fish in to you and so long as you are not a complete wally will not put the fish off.
One tip I found useful from a real expert, was that if wading and trotting, always try to keep a bank of weed between you and the run you feed. I am constantly amazed at how close the fish will come. In fact once whilst maggot trotting, with the inevitable spillage from baiting, I felt something brush against my legs, looking down it was quite a big barbel. Not being one to look a gift horse in the mouth I dropped the tackle in, the fish took it first time and shot off between my legs; this could have been really embarassing. Luckily I was using a pin so just let the fish go and passed the rod between my legs....I got some funny looks and comments from the lads on the opposite bank, but had the last laugh with an 8lb barbel.
One other trotting tip I have found invaluable, is to use a heavier float than you think you need because the extra control it gives can make all the diffrence between a blank or a good day. Also if the weather takes a turn for the worse (almost guaranteed these days!) and the wind gets going that heavier set up means you don't have to change it and upset the established feeding and trotting pattern by messing about.
Finally if wading always wear waders...I used to wet wade a lot. This is okay in the summer but I used to do this in the winter sometimes but after my legs turned blue, a really interestng navy colour with my legs remaining blotchy with not much feeling for weeks, I decided investment in waders might be good for my health!