A collapsible or compactable hydrofoil device having front and rear foils,
a support structure and a steering mechanism that may be collapsed into a
compact size for transport and storage. The steering mechanism includes
several releasably coupled components that are in turn coupled to a drive
platform and drive foil. The drive platform may be configured in a
plurality of embodiments that each achieve ready disassembly and
reassembly. The drive foil may be configured of multiple releasably
couplable sections.