Spars, supporting sails, include masts, booms, yards, gaffs and poles. The masts, booms, and gaffs are all original and constructed of varnished Sitka spruce. Linemen may use climbing spikes called gaffs to ascend wooden poles without steps on them. Clowning, dancing, singing and plays were all featured in the penny gaffs. In both types, knives or "gaffs" are used. Dipnets, gaffs, or gigs were used depending on the fishing spot. Joseph Merrick, the so-called Elephant Man, was exhibited at penny gaffs. As the gaffs became more popular, larger, more spacious venues opened to accommodate them.