Rodinal is one of my favorite developers. Rodinal works well with most B&W films and will yield uniformly developed negatives with a variety of different agitation techniques.
Continuous agitation works fine with Rodinal (with shortened developing times - - about 20% to 25% shorter than development with intermittent agitation).
Intermittent agitation also works fine with Rodinal. For example, I am currently developing Ilford Delta 100 in Rodinal diluted with 50 parts water to 1 part Rodinal for 11 minutes at 68 deg. F. I am developing in a small tank with 10 seconds of gentle agitation per minute. This means one agitation period per minute consisting of 4 or 5 gentle inversion cycles of the tank (twisting and rotating the tank while inverting).
Well Ka, you will probably not see any difference in either the negatives or the resulting prints with either agitation technique (once you have determined the developing time & temperature for each agitation method). If you have already established an agitation procedure, I would advise sticking with it. From your initial post, it sounds like you may already be using automatic rotation.
If you change (or are establishing) agitation methods, you will need to do some testing in order to get Maximum Densities and Contrast Index that match your printing procedures.
Can only tell you what I do, which is either Rodinal 1+25 or 1+50 for either Plus-X (older version, Kodak priced it to high with the new stuff) or lately with FP4 Plus which I find very nice. I give it the normal agitation for the the first minute, then 4 to 5 inversions each minute there after. I have had no problem with grain and have some 35mm that I have enlarged to 8x10 with not problems, but like any 35 it is noticeable at 11x14 and not pleasant with enlarged to 16x20..but what 35mm is?
It seems you either like the stuff or not. Have to admit I have never tried 'tipping' - Oh, by the way I use a small metal tank and reel, but use 2 reels for 35mm and fill the tank.