Flash bet is literally the enemy of a gambler if they are in it for the money. Normally we say stuff like "if you long enough, house edge will make sure you lose your money" and mathematically that is correct, but with flash bet you do not need long period of time, no matter how much money you have, you could lose all of it under 1 hour if you wager carelessly enough. It is really something huge and we are talking about just doge here, think about gambling flash bet with stuff like ethereum or even bitcoin and you will realize that you end up with countless amount of money in just few hours!
Hence I wouldn't suggest it to anyone, there is no strategy or method that could make you win with flash bet, you are gambling tons of money and you are gambling it against the house. My suggestion would be highly manual per bet and just try to have fun and get entertainment value out of this, wolf.bet is a marvlous place to have fun, it is one of the most fun places I have gambled, just focus on that part.
There can be other uses as well
For example, flashbet can be used to boost up your wagered amounts. You run it with settings safe enough to cope with the house edge, and then put it in an endless cycle (somehow) while your rank and, by extension, your rakeback go up along with your position in the Wolf race. And who said that flashbet is the enemy of the gambler if they are in it for the money? I would say it largely depends on what kind of money you are after