My best stratergy for 3-19 is the one i said. Seriously, you just gotta hit the far boulder and set it off so i rolls down and gets the tnt, and you gotta make sure the birds comes back and kills the pig on top of the tnt table... hopefully the other tnt will knock down the structure beneith, and if you are lucky the other 2 tnt will go off. I got it so close... just the tnt under the top pug tilted and nearly just nearly exploded... that was all i needed. but it can be done and that will be 90k.
Just keep going at it.