While I do agree that Bonito is mighty tasty, I have to urge people to be really careful about preparing it yourself.

The reason bonitos are prepared lightly charred is because they have parasites on their skin, which must be killed before hand. The parasites easily die under heat, so if you take care of it there's no problem.

Anyway, people prepare their own bonito sushi all the time, but you just have to be careful