Seriously? Those fights just made lumpy cement and hurt feelings. I remember my brother putting in way too much sand on purpose to ruin my mix. All it built was a patio full of cracks and us not talking for a week.
You know, family DIY always seems to spark more fights than fun. I mean, my sister and I once built a bookshelf that leaned so bad it looked like modern art. We didn't speak for days after that, all over some crooked shelves.