When I've done semi-stand, I used Parodinal 1:50, added 50% to the development time, and then agitated only every third minute. The idea, which worked pretty well, was to give the long development of a hard push, but use the reduced agitation to reign in actual contrast to normal -- and it worked pretty well. For instance (to pick a film that hasn't changed since 2005, when I first did this), for Fomapan 100, I'd give 11 minutes at 20C, agitate every 3rd minute (normal would be about 8 minutes with one minute agitation cycles). I still exposed at box speed; what I got out of it was improved shadow detail, as if the film was actually a 125 or 160 film shot at EI 100.
That said, with 35mm you can still get some bromide drag -- it's most noticeable as "shadows" from the sprocket holes, intruding in the images from whatever edge was up in the tank. Never saw it with 120 or sheet film (in tubes), though it was most likely there in a form that was less visible.