I know majority of the time it's not the deck it's the player , but in certain decks when a couple of cards don't draw their bonus , your screwed. Which makes you think why not switch to Mono. In mono though there are glaring problems in it but you can overcome that with smart play .
So which is better? And what clans would you Half + go Mono with?
I think half-decking is far easier. It's entirely possible to build a deck of 8 cards that are still strong if one of them lacks bonus. With Mono clan, on the other hand, there are only a few possible strategies to pick from. Your opponent has a better chance of guessing how you're going to try to make gap, and that can translate into a significant weakness.