I say, PROGRESS!
Thanks to Nitrodon, I now have decided to start from SRAM. That SRAM is a hacked one, which basically tells the game "Hey, every unicycle has a silver medal on every single set of tracks". That means I can now start the TAS for real.
Progress might not be fast (in fact, it may be really slow), since I'm now in University (aka College in the USA, something else in other countries). Still, I'm gonna have some spare time, which I'm sometimes going to use to TAS. Don't expect too much though.
Here's some technical info on how to create that hacked SRAM yourself:
1) Open Snes9x, load the Uniracers game, start recording a movie (make sure you select to start from reset and clear SRAM).
2) Continue recording, and go in the unicycle selection screen (Don't know if that's necessary, but I know that this works).
3) Stop recording, delete that completely useless smv, close snes9x (or unload the ROM).
4) Using a hex-editor, open the .srm file of the game and set 69c-71b to 02 (all silvers) and 10d3-10e2 to 02 (first 8 tracks unlocked)
5) Save the modifications, open snes9x, load the ROM, and voilà! All unicycles now have access to the Gold races of all the tracks!
Here's a more detailed description of those 2 intervals (69c-71b and 10d3-10e2):
Section 1: Tour medals (00=none, 01=bronze, 02=silver, 03=gold)
69c-6ab: Crawler medals
6ac-6bb: Jumper medals
6bc-6cb: Shuffler medals
6cc-6db: Bounder medals
6dc-6eb: Walker medals
6ec-6fb: Runner medals
6fc-70b: Hopper medals
70c-71b: Sprinter medals
71c-72b: Hunter medals (starts with all silver in a clean SRAM)
Each uni gets one byte in each of those lists, which is why each list is 16 bytes long (16 unis)
Section 2: Tours unlocked (00=4, 01=6, 02=8, 03=all)
10d3-10e2: Tours unlocked for each uni
So yeah, I'm gonna be using that SRAM to make the TAS. I'm basically going to create a movie, select "Start from reset", but uncheck "Clear SRAM". The movie will start by renaming the Uni I'm going to use to "Hal" (because there's not enough room for "Halamantariel"), and then it will proceed to pwnage.
In the meantime, you can create that hacked SRAM yourself and try beating Goldwin in realtime. Loads of fun guaranteed.
EDIT: For the lazy, I've put the hacked SRAM (as well as the clean one) on my website. Go here:
http://www.obellemare.com/speedruns/ scroll down and download the file named "Uniracers (U) [!] (Hacked).srm", then replace your uniracers .srm file with this one.