Bowmasters + Horntail?

I don't see why HT groups have a problem bringing new members in. Let's be honest, it's maplestory. Once you survive the first 2 minutes of a boss fight, it's not hard to survive the rest (unless something goes wrong). It's the same thing with zak, for some reason back in the day, no one wanted to bring new runners along, yet it only takes 30 seconds at zak to get adjusted to his attack timing and damage.