I am in the midst of writing comments for my single segment run, but I will give a couple more segments of planning for the segmented run. This is only a rough draft so things could change.
Segment 3 - Get back-to-back rare steals on Klikk and use 2 of those Grenades on it. This would leave me with 3 Grenades after this battle. The first pirahna battle is pretty much unavoidable, especially when doing it after an already extremely luck reliant part. Steal one Grenade on those Piranhas (4 total). Save at the Underwater Ruins sphere.
Segment 4 - Use a Grenade on the forced Piranha battle here and get 4 Speed Spheres (3 Grenades left). Get a rare 3x Grenade Steal on Tros and kill it with 6 Grenades. Getting a crit grenade would be a bonus, but it's not very likely to happen combined with a rare steal. However, if that turns out to be easier to manipulate than back-to-back rare steals on Klikk, I might just do that and only steal 3 Grenades on Klikk instead. Save at Besaid Beach.
Now, the one thing I have not factored into these segments yet is Tidus' Overdrive getting filled; because I am not sure yet whether I am going to need Slice and Dice or not. If I can find a BFA strat that doesn't require Slice and Dice, it would make this process so much easier.
Segment 3 - Get back-to-back rare steals on Klikk and use 2 of those Grenades on it. This would leave me with 3 Grenades after this battle. The first pirahna battle is pretty much unavoidable, especially when doing it after an already extremely luck reliant part. Steal one Grenade on those Piranhas (4 total). Save at the Underwater Ruins sphere.
Segment 4 - Use a Grenade on the forced Piranha battle here and get 4 Speed Spheres (3 Grenades left). Get a rare 3x Grenade Steal on Tros and kill it with 6 Grenades. Getting a crit grenade would be a bonus, but it's not very likely to happen combined with a rare steal. However, if that turns out to be easier to manipulate than back-to-back rare steals on Klikk, I might just do that and only steal 3 Grenades on Klikk instead. Save at Besaid Beach.
Now, the one thing I have not factored into these segments yet is Tidus' Overdrive getting filled; because I am not sure yet whether I am going to need Slice and Dice or not. If I can find a BFA strat that doesn't require Slice and Dice, it would make this process so much easier.