Make Murray's Boat Faster
To make Murray row his boat faster, press X fast, repeatedly. If you boat turns around, press SQUARE, and you can keep moving without stopping.
Make Sly Paraglide On To Blimp
To make sly paraglide on to other blimps without falling is to wait for the next blimp you want to jump on come closer to you, then go on the launcher and you won't die.