Well, first of all, thank you very much Andreas for the CCI F-lap strat. This definitely was helpful, and yes, before I was just using the bump we use for the 3-lap, and tried to fit in 2 mushrooms somewhere on the lap. Passing by that gap in the wall sure made all the difference, so here's my new F-lap PR doing that...
Cheep Cheep Island F-lap: 14"68 --> 4"17 cut!, on 1st lap
I've done several high 14's already, so I don't think I can keep cutting down huge chops off that lap with my current stat, but probably if I get slowed down less by the deep water and do the F-lap on a 2nd lap instead of a 1st, I can take it down at least to a low 14".
After I was done playing CCI, I decided I would go to MC1 in the SMK tracks, to try to get a good 0-shroomer lap on tape. After a few minutes, my 1-lap attempts quickly changed into 5-lap attempts, so from there, I thought that I would tape any eventual 5-lap PR I would get only, in hopes that it would have at least 1 good 0-shroomer lap out of the 2 0-shroomers. Well, so I worked progressively my way down the 49 seconds, start from my old PR, 49"18, to 49"16, then 49"08, 49"06, and even a disturbing 49"00 after, finally to get 48"96.
At the moment, even though I had reached my initial goal, I was not really satisfied, because I knew I could get faster without too much trouble, so I still kept playing! I almost immediately got a 48"96 PR tie, and not too long after a 48"91 PR. Right away, I strongly hesitated whether or not I should keep trying to lower that PR, so I went downstairs and checked the top times, only to realize that this 48"91 was putting me in a 3-way tie with Sami and Archibald, both of whom I knew had done their 3-lap without wall tricking as well! So, you will understand that I just couldn't leave it there

, and I kept playing and got a 48"88, which once again, didn't quite satisfy me for some reasons! The next few attempts made me realize that my driving was slowly getting less and less efficient, but finally after maybe another 45 minutes, I got a new PR which this time would be my final one!
Mario Circuit 1 5-lap: 48"83 --> 0"35 cut
Mario Circuit 1 F-lap: 7"66 --> 0"09 cut, got that one before I started attempting the 3-lap
Splits: 10"63-10"27-9"21-9"40?-9"32
Best 1st lap 0-shroomer is 10"61 (10"56 when not preparing the boost for the following lap), 2nd lap is 10"20 (10"18 when not preparing the boost for the following lap), so these aren't my best 0-shroomers laps, but TermoPilluco, do you think that will be enough for you? 3rd lap is particularly nice, but I've gotten a 9"19 there, and 4th and 5th lap are necessarily ~0"10 slower than the 3rd one, because I don't get a boost on those ones. (3rd lap boost is prepared from the 0-shroomer 2nd lap) Alright, I think that's it. My message is getting quite long...