Martin gale will work on small ammounts on a big balance. Just quit whilst you're ahead and don't get greedy.
Not really, you can also bust on the first few rounds, even if you have a big balance, the risk is actually higher here.
This gambling system works so that you must take ever escalating risks to potentially receive a small reward that does not increase with your increased risk.
It isn't worth is to use 1BTC to get 1 satoshi. If you actually want to use it to make a decent profit, example, 0.01, you can bust within the first few rounds, variance occurs so you might get a very bad streak immediately.