The way I do it is to turn the block on point. Start at the top of the point (with the walking foot) Sew down the right side to the bottom piont of the on point block.
Take your needle out. Go back to the top point. This time, sew down the left side of the block to the bottom point where it meats the other line of stitches. ( I mark my sewing lines with wash away marker.) This compleats the block without having to turn the quilt. Then just go to the next block.