With a pro taper shaft, you will be able to line up to a shot, put the tip in the area you want to contact, and as long as you don't have any other stroke flaws, you won't need to do any fancy stuff in order for the tip to go straight. With a conical taper shaft, you must adjust how you line up due to the non parallel sides of the shaft causing the tip to rise and fall as its stroked, when lined up using dead center of the shaft as your aim.
If you lined up the on the rail shot you guys are talking about, you will be forced to jack the butt end of the conical taper shaft to allow it to follow the straight bottom edge, and not have the tip rise or fall. And if you are having problems with miscues on force follow, changing to a pro taper won't help, there are other areas you aren't paying attention to.
Okay, I'll play along for awhile. I do not believe anyone said they were having any ongoing problems with miscueing with a conical shaft. Mr. Naji merely pointed out the difference in the taper & the fact that if one does not take that into consideration one
could have a tendancy to miscue on high cue ball contact shots like the 'force follow'.
You do not have to do any fancy stuff. As PJ has suggested, if you gauge up to the CB & do not have a funcky grip or any funky stroke mechanic flaws the tip should return the desired contact point. There are some other 'abnormal' shots that may need some attention in order to decrease the odds of a possible miscue. One of which has already been pointed out.
In 'jacking up' the butt end of the cue, it is a
minor variation if one even wants to call it a variation as I believe the conical taper came before the pro taper(I might be wrong). The center line of the shaft would be angled down
very slighty as the stick rides on the bridge & the tip would have a miniscule angle to it as well. This is only required if you want the tip to ride more in a vertically stable straight line than it the slight down & up movment if one would holds the cue firmly enough to keep the stick on the center line of the cue. In that case
the stick would actually leave the bridge going back & return down to it on the forward stroke.
All that being said, if one would ever bridge beyond that of the point of the pro taper and then stroke, the sudden rising of the tip on the foward stroke might cause a problem even though it would fall & rise back to the aimed point, but that rising
motion might cause an imprecise contact.
So, all that being said, I'll play along, what other abnormalities may need attention in order to decrease the odds of a possible miscue?