Hydrofoil boats incorporating the use of hydrofoil to help them propel much faster on the water are an attraction that has held the shipping industry for quite some. Don’t send that old car to the crusher! recycle it the green way by turning it into a walk-behind farm tractor. these free vintage plans show you how.. How fast does it go? for estimating the speed for small outboard planing boats see planing speed boat chart. this chart should be used for.