I use this mainly for repairing my fen boots.  The surface needs to well roughened and clean for it to stick well.  It shouldn't make a difference but the black version of this seems to have worked better than this  clear version for me.  It is thicker than Aquaseal so it doesn't go into as small crevices but it is cheaper and can be used when there is a wide gap between the surfaces, like for reattaching soles.