I'd never seen this thread before. I guess I just go commando with mine, because I'm freeballing it too. I have my grow journal, and a note taking app on my phone, but that's just my seed list and sometimes songs I've rewritten to be about Cheese.
You'd think as an OCD Computer nerd I'd have a server with all this stuff written out and documented, but no.
I do have "Tags" I have in my brain though; I know little things about each strain I've ran, and what to do about growth and nutrients and so on. For example, I couldn't tell you dates, but for Black Lime Special Reserve, which I just smoked, I know it produces well for it's size, handles cold temps and snow, and grows a Christmas Tree shape if it's not topped.
I give nutrients based on what I see, and honestly, I eyeball that sometimes too. If I wanted everything to be exact, I'd do it properly. I love to experiment though, and it's one of the things I love about growing in general.
I guess the adage about never trusting a skinny Chef who follows the recipe every time would be somewhat accurate? Lol, somewhat accurate, that's my grow method.
Don't get me wrong, I'll spend an hour getting eaten, and almost carried off by Mosquitoes, looking at every leaf on every plant, to look for symptoms to address, so that kind of helps with not having to log everything, but that part, the "watching" and making mental notes, is sometimes really relaxing to me.
I may be really stoned, and not sure what the actual date is right now, but I can also say that my Blue Cheese S1 has gained 3 nodes since going outside, and has a ridiculously thick stem already lol.
I try to be exact with strains, and strain info, as that part is where the OCD kicks in. I give "Not sure OG" seeds out to whoever wants them. Lol. Not wasting my slots on something that I'm not sure of. I mean what if it was like, Cookies or something? I'm not sweating my ass off all Summer for Cookies.