the hover board is on top of the windmill and it is blue
The hover board (hovercraft) runs on manure.
power it with the manure
in the top of the windmill
If you pay the fee on astro knight island then play it.
Non-existent
Google "Astro Knight Island Walkthrough" on the stuff that comes up, pick a youtube video. That was easiest for me.
Go to the the top and get the hover craft
The spaceship in Astro knight is located in the mud next to the windmill
to the left and right of the princess
arturus
The boss is upstairs in the Astro Zone company building.
It is on tp of the castle roof in astro knight island