Martiangle is a very good strategy, you can earn a lot of money from this strategy, but be careful not to use this strategy too much if you do not want to lose all the money, because many bookies are committing fraud.
No it is a bad strategy because you will have to wager a lot for very little potential profit.
There is no anti-martingale system and dice sites don't need to commit fraud against martingale gamblers. Instead, just by luck, they will sooner or later get a long enough streak to get busted if they keep playing.