Larry,
Like Jerry said, speed can be all over the place. For me, I akin my speed to drifting. When the wind is too fast, the line hangs back at a shallower angle and it takes more weight and more line out to reach a desired depth.
More than anything, I look at the angle of my line in the water. Most of the time, I stay in the .3 to .6 catagory when I am working a sinker, hook, and minnow combination in less than 15 foot of water. Keep in mind that this is basically "over the side of the boat" trolling. Basically controlling my drift. When I switch over to jigs tipped with either a minnow or soft plastics, my speed does go up a little bit. I do fish with both at the same time but I find that the fish don't like the slow speeds and the jigs whereas they don't like the faster speeds and the hook and minnow. Weird I know but by having both, I cover all the bases!
When long lining, I like somewhere between .6 to 1.0mph but, it isn't something I do regularly. I save that for when the wind is blowing and that is the best I can do. I've found it to be a deadly tactic however during that time.
