Your first issue is the FG knot. It is not easy to tie anywhere
but on a stable surface. Not in a boat, no matter what the dude
in the video says.
Look, people have been using uni-to-uni and Albertos for years
without major issues. They are simple, and they work, and I can
tie either while sitting in my yak in 20 mph winds being rocked
about. I know. I did it the other week.
I know there's a religious following for the FG knot. And I get that
it is super thin and super strong. But it is not the answer for all of
us.
*Most* of the time I tie the uni-to-uni these days. I'm also a big
fan of the Mod'd Albright/Alberto knot. Practice tying them well
and they'll hold for you. Set your drag properly and get your whole
system in gear for the fight (i.e., learn to play the bass on the end
of your line, drag, rod position, and so on). You can land big bass
on light line.
As for no leader, that's totally cool. I've caught plenty of fish that
way, but once I discovered using a leader saves the number of
times I cut into my braided mainline (ok, so I'm married and have
four voracious-appetite boys, so $$ doesn't grow on trees for me
and I wanna save my braid!!) I never looked back.
Again, I can and have caught bass on straight braid as have we all
who use braid. I just prefer a leader tied on, and I never worry about
the knot breaking...
Good luck, mate!