I use spray basting and I think that it is easier to FMQ since the sandwich does not seem to move or pucker if you have layed it down correctly. I start at one of the upper corners and do meandering or stippling down and across -the across being about 1/4-1/3 of the quilt. I will go into the next section ocassionally so as to to have a line where the FMQ in one section ends. When I reach the bottom then I start up the next section to the top and then down again. I will turn the top when I am doing the side sections so the bulk of the top is to the left side. When I do the center the bulk of the top has to be to the right when make FMQ harder. If you spray baste the sandwich will not shift so it is not important to start in the middle. Also the sandwich is lighter and easier to move than when you are using pins. Sometimes I will do SID in the center both up and down just to anchor the sandwich