A frame structure for a safety enclosure for a recreational structure includes at least one substantially rigid horizontal support member, at least one vertical pole member having a top end, a substantially vertical portion and portion that is not substantially vertical, and at least one end cap member. The end cap member mates with the top end of the vertical pole member and releasably receiving a horizontal support member. In one exemplary embodiment, the vertical pole member can be part of a safety enclosure. In another exemplary embodiment, at least one horizontal support member is flexibly rigid. One exemplary embodiment provides a netting-type material that is attached to one of a horizontal support member and an end cap member, such that the netting-type material forms a substantially cylindrical shaped safety enclosure space.