Speed Tricks: Skip Acid Worm

Notes:

After destroying the first 2x2 block, use the power grip to get on top of the next block as a ball.
Go as far left as you can before you'll fall off and set a bomb.
When it goes off, press left, and you'll end up on the next block. Repeat this until you're on the last block.
Get near the edge, set two bombs, press left just before they go off, and you should get a double boost to the left.
As soon as you can unmorph in mid-air and you should grab the ledge (as shown above left).
If you can unmorph quickly enough, you can also use that method for all the blocks (as shown above right).
If you don't have Power Grip, destroy all the blocks, then do a Horizontal Bomb Jump, as shown in the below video.
Doing this is like doing a diagonal bomb jump, but you must place each bomb at almost exactly the same height as the previous bomb so you don't hit the ceiling, as shown below.