I still use my Cooper's micro brew fermenter. but since I started bulk priming with a bottling bucket,do this; Take the pin valve off the lil bottler wand & insert it into the sanitized spout on the spigot. Then cut a lenght of 3/8" ID tubing to fit over the open end of that,then down to half way around the bottom of the bottling bucket. Then when your priming solution is ready,start racking the beer into the bottling bucket. Get maybe 5" of beer in it,then pour in half the priming solution slowly into the surface of the swirling beer. When about 2/3 done,pour in the rest. You'll have to GENTLY TIP the FV to get the rest of the beer out.
Besides,after 3-4 weeks in primary,the yeast cake should be compacted fairly tight by now. If when you're done racking it off,& get some yeast in the line,then just don't let that part run all the way through.
I made my bottling bucket with the Italian spigot fairly close to the bottom. Don't have to tip it as much that way. ?And I get all but a couple TBSP of beer out. Grainy stuff stays on the bottom too.