I got myself a lot of good spears.
Of youre having trouble dodging him I recommend spears and go on the offensive. Dont wait for an opening or try to dodge. Instead, with a spear, use its quick attacks to stagger Thunderblight, this'll open him up for some tough justice.
I tried to be...
The game will always start you before Ganon. Every Zelda game does.
Your file should now have a star at the end indicating you did beat Ganon. But you'll always be sent back to before the final fight.
I dont think you can farm them. Some side quests (or at least one) reward you with them. Otherwise you have to wait until night and chase them down. Ive not heard of them coming from anywhere else.
If you get all the memories you get an extended ending.
But yeah, not much else to do aside from a lot of sidequests and shrines.
I guess the star undicating a ckear save file might help with adding the DLC expansions when they release.
Bit of a shame there's no new game plus... or even just...