When I play 2p with friends who don't have the Book of Stars, I usually do it like this:
1) Wait till the lemon prepares to shoot on the left side of the platform.
2) Immidiately bomb-jump on the platform and wait till you can lay another bomb
This is more risky because the lemon may kill you if you are not fast enough, but if you are someone like me and can't do it the way Fourththing does it, it should get the job done.
