Duck hunt for me doesn't work as an aggressive character unless you get them into 'juggles the clown', primarily for several reasons:
His attacks have a lot of excessive frames for easy punish by competent players,
His attacks don't always cause flinching (allowing them to still attack)
He's light, so easily dismissed by 'power users'
His attacks lack launch power
Other attacks override his close range attacks, or cancel them (which as a light, easily launched character with no real launching power himself, makes it a dangerous trade-off)
The present (as of 1.1.0)
slide glitch found in his smash attacks
It's possible to use his light attacks, but then you're denying 6 of his major movesets (frisbee, can, gunman, smash A forward/up/down).
Players get bogged down in the concept of 'honour' with DHD, by trying to use projectiles lightly - but the fact he's underpowered means the situation isn't honourable in the first place, and so he's forced to fight dirty, even if that means loading the screen with projectiles.
(It is possible to win with light attacks, and they make up the main bulk when exploiting the projectile's opening, but it's very much a 'one hand behind my back' scenario.)