Alas, you can't alter the seal up to such a big point. The seal is a seal, nothing more. It isn't a living thing that can think and say "Hey, that's not an enemy, abort explosion!!"
An alternate way is adding it to a kunai and throwing it to your opponent or over the battlefield. It doesn't specify being put on the ground, nor is it a continuous amount of chakra that has to be streamed, meaning that it is perfectly logical that it would work this way.
Anything else?
An alternate way is adding it to a kunai and throwing it to your opponent or over the battlefield. It doesn't specify being put on the ground, nor is it a continuous amount of chakra that has to be streamed, meaning that it is perfectly logical that it would work this way.
Anything else?