I do this in a completely different way. First of all, my poles are telescopic, meaning I can change the hight. I place horizontal bar at eye level and make first one or two rows of tiles. Then I raise the poles and add more rows. If the hight of venue allows, I can virtually do all rows at eye level. I never do anything on the floor. When all raws are done, I put poles down. My tiles are self locking as well but they are not difficult to dismantle starting from the bottom row using the same method. No knees or hands pain while mounting or dismantling.
