Abstract: A hoist apparatus comprises a boom, a load lifting device, a retention structure attachment bracket, a stabilizing bracket and a retention structure. The load lifting device is attached to the boom. The retention structure attachment bracket includes two spaced-apart attachment features each configured for having a respective engagement member of an elongated retention structure engaged therewith. The stabilizing bracket is in spaced-apart relationship with the stabilizing bracket along a straight reference axis. An engagement face has a recessed profile such that an engaged portion of an elongated structural object is constrained therein. The retention structure includes two spaced-apart engagement members each releasably engagable with a respective one of the two spaced-apart attachment features of the retention structure attachment.