Roller striking

[MikeSharp01]

THURSDAY IS big day for garden room slab concrete laying. My plan was to use poker and vibrating bar to get it level and flat is then bull float and finally a powered float with pan and blade to get the finish  (polished) but I have read that a roller striker on place of the vibrating bar would get me closer to the finish I want at that stage. I have the edge of polystyrene former to run it along but was wondering if anybody has experience of using one of these machines.