This is a method of how Minato could attack a tailed beast.
1st: He throws a FTG Kunai over the beast then Mark it.
2nd: He backs away quickly to get out of blast radius.
3nd: The beast seeing him trying to run sends a Tailed Beast Bomb to try and wipe him out.
4th: Minato now far away enough Teleports the Biju bomb away an onto the beast where he Marked it at.
He isn't caught in the blast radius now because he got away quick enough.
1st: He throws a FTG Kunai over the beast then Mark it.
2nd: He backs away quickly to get out of blast radius.
3nd: The beast seeing him trying to run sends a Tailed Beast Bomb to try and wipe him out.
4th: Minato now far away enough Teleports the Biju bomb away an onto the beast where he Marked it at.
He isn't caught in the blast radius now because he got away quick enough.