Hey everyone. Question for all the math whizzes out there.

I recently got a $600 welcome bonus on an online sportsbook/casino. They pay reliably.

Had to roll over 117x, which is pretty brutal.

I chose to do it at blackjack, with these rules:

Double any 2 cards
Double after split allowed
Resplit aces not allowed
Blackjack pays 3:2
Late surrender
Dealer hits soft 17

I started out betting 2 hands of $75. When I won like 2 hands, I upped that to 2x100. When I got my bankroll above $1000, I upped it to 2x150. When I got my bankroll to above $2000, I upped it to 2x200. When I got to over $2500, I upped it to 2x250. When I got to over $5000, I upped it to 2x300. If I fell below my original 600, I lowered it to 2x$75 again.

Well, I ran it up to $2600 then almost busted, then had a comeback and started running it up fast. I had $14k at my high, never having bet more than 2x300.

But this point I was at about 71% cleared, meaning I had a little over 20k left to clear.

This is where I screwed up. I kept betting 2x300 and starting running bad. Well, when I got to $11k, I decided to go down to 2x250. I still ran bad and only at the very very end it I lower it way down, and I finished with $7700.

Obviously I'm happy given it was $600 free money to play with, but I think maybe I coulda cleared more if I lowered the variance once I hit $14k with only $20k in action to run.

Aside from my overaggressive end play, what do you guys think of my clearing strategy?