This is easy. Simply download both BoingBag archives.http://os.amigaworld.de/download.php?id=4http://os.amigaworld.de/download.php?id=5
Extract them to RAM: by pressing the right-mouse button over the archive and select "Extract to RAM:" entry.
Once the archives are unpacked, doubleclick the "Install" icon of the BoingBag1 and follow the instructions. When it asks you where to install the update, simply select AmiKit:
Do the same with the second BoingBag.
Once you successfully installed both of them, you might want to run "Install Patches" located on desktop. It installs various unofficial patches on top of the BoingBags files.
Note: The installation of these additional patches requires the re-start of the whole emulation (re-boot is not enough).