They is very little pressure on a tip ring., even when the rod is in a fighting curve there is no pulling on the ring and if it was slightly miss aligned, the whole blank will twist very very slighly to compensate...with the line always coming off the very centre of the ring.
You can buy rings that have two flat "prongs" that feed down the blank and are whipped in place, but these tend to be stand off rings used for coarse rods or beach casters which can have extreme twisting forced applied due to heavy weights and casting styles (Pendulum, off the ground etc)
Like Sandy, I use a wee dot to make alignment marks, but with a white pen. I may, if its a special rod, use a piece of thread woven at 90 degrees to the whipping that goes on the joins. Its very subtle but a pain to do, hence only done on "Specials".
Please post pictures once its finished