Sail support device comprising a plurality of slides (1) adapted to be retained to a sail (21) by webbing (8A). The slides (1) are accommodated in a groove (3) of a track member adapted for mounting on a stay (23). Each slide (1) has an elongate hollow body (2) with a longitudinal aperture through the wall thereof enabling an eye (20) formed by the webbing (8A) to be inserted into the body (2). A pin (9A) is insertable into the body (2) and through the eye (20) and locates in the body (2) to anchor the webbing (8A) thereto. A gate section (22) of the track member is rotatable about a connector joining sections (4A, 4B) of the track member together to expose open ends of grooves (3) enabling the slides (1) to be slid thereinto. With alignment of the grooves (3) of the gate section (22) with those of the track member, the sail (21) can be raised with slides (1) travelling up the full length of the track member.