Using a repel and running through an area with wild pokemon certainly does advance the RNG. I used one the whole time to advance my frame when capturing Heatran. I do not know for sure if it advances in the exact same way, but I know for sure that there is some advancement going on, and it is definitely more than + # of party pokemon per 128 steps.Not sure about this. I know it's been looked at, but I did not take good notes on this one. I seem to remember repel stopped RNG advances, though.
Whenever there is opportunity I would advise that to reduce the number of journal flips, that you run through the grass/area where wild pokemon appear.
I always sweet scented instantly after entering the game and if my seed was correct I would do an approximated number of multiple of 128 steps (so that I could still walk 128 in heatran's cave to change my frame from odd>even or vice versa) because I wasn't sure if steps in areas where pokemon appeared effected steps in areas where wild pokemon do not appear. I would then sweet scent from there and do my reduced journal flips.
Sorry if this is a bit nonsensical.
No, it would be +7 for your next capture. So your first was 3, the next would be 10 (I'm fairly sure, but you might have to take Mesprit into account again)in the OP, it says that Sweet Scent will advance the RNG by 7 in caves. I just caught my first RNG-abused pokemon, so bear with me if I'm understanding something wrong.. I caught an Unown, which was in a cave (frame 2) and I have a Mesprit running around (that's a +1 frame), so if I catch an Unown, it would be at Frame 3. However, when I hit the right seconds, but wrong delays, I captured it to see where I landed. Since I used Sweet Scent to capture that Unown, I expected it to be at Frame 10.. but strangely it was on Frame 3. When I hit the right delays, I went for my offset of 43, and only did 20 flips to get there (after 20 flips, I Sweet Scented). Shouldn't Sweet Scent advance it by 7?
By the way, thanks for making my first RNG-capture possible, :)