I never knew Burnt Island had Muskies. We caught a few specks in Big Porcupine years back, beautiful colored emerald water, we were on our way into Bonnechere. Since you are going in August it may be a bit more challenging, you will have to get down deep for Lakers. Troll with a 3 way swivel and some good weight.
Be sure to try Coon, Bonnechere, Phipps and McGarvey, all are easy day trips from BP.