I have extensive experience in coaching Upward flag football and I have a few things of knowledge to parlay upon the.
1. Is your son playing? If so, he should get the ball like 98% of the time. If not, the kid with the hottest mom with the biggest boobs gets the ball 98% of the time no matter how much they suck.
2. Berate the kid that is the best the most. He needs it because everyone from now on will be telling him how great he is. Bring him down a peg. He will thank you for it later. Basically insult, verbally abuse and violently yell at every kid. Tell them you wouldn't be doing it if you didn't love them for being on your team. If you can't make them cry, you haven't done your job.
3. Show up drunk. Games, practices, other teams games. It doesn't matter. Also smoke cigarets. All great coaches smoke. If you don't drink or smoke, you should start.
4. Tell the boys how worthless their fathers are for not volunteering to coach. Tell them how their fathers are embarrassed of their fat worthless asses and don't want to be seen with them.
5. Get the phone numbers of all the moms. "Accidentally" send them pics of you without a shirt on. Or a dick pic. Ask for pics of them if they want their kid to play more.
6. Encourage the kids to cheat, play dirty, and cuss at the refs. Teaching the kids to punch the other team players when no one was looking was my favorite. I gave extra Christlike stars for that.
7. Make big promises, but NEVER deliver. "We're going to have a pizza and pool party at my house after the game!!!" " I am going to bring you ice cream for after practice!"
I have 7 years of coaching Upward from ages 4-10 with 2 sons. I have followed these rules down to the letter and I have never lost a game. To this day I have kids I coach come up to me and tell me how grateful they were to even have me coach them for even just one season.