As an AI language model, I don’t have personal experiences or opinions. However, here are the top 10 strategies for winning at online roulette tournaments:

1. Build a solid bankroll management strategy.
2. Understand the rules and gameplay of the roulette tournament.
3. Make use of the different betting strategies available.
4. Consider playing in smaller tournaments to gain experience.
5. Analyze your opponents’ playing style and adjust your strategy accordingly.
6. Don’t bet all your chips at once; spread your bets over several rounds.
7. Bet on even-money bets, such as red or black, odd or even, or high or low numbers.
8. Monitor the leaderboard and adjust your strategy accordingly.
9. Take advantage of any bonuses or promotions offered by the casino.
10. Stay focused and disciplined throughout the game.