272 was accomplished with a glitch in the old Beta version on hole#2, where if you hit into the trees left of the fairway, it would bounce off the mulch like concrete and bounce up and over into the fairway below. Many other players had 265+ drives using this same glitch.
As for the yardage marker, its the only time I have ever hit that particular marker(150) dead on the fly. There's no other explanation I can provide you for why it took off like it did.
For pointers on better drives: Each hole generally has a 'best line' to take, which will provide better roll. Sometimes it requires full backspin to elevate over a hump, other times it needs full topspin to maximize roll. It all depends on the hole.