The combination of stability and light weight means that multihulls are very fast and offer exhilarating sailing. Most multihulls are designed to be sailed by two people but there are several types that are sailed single-handed. Multihulls require slightly different sailing techniques compared to boats with a single hull. Although multihulls and trimarans (boats with three hulls) are very stable they can still capsize if allowed to heel (lean over) too far.