Good idea for rear ballast, I usually have a rake or box blade on, but that limits swing in some areas. Where did you get this ballast box? Where are you in Florida, I am in Taylor County (big bend area aka the 'armpit' of Florida)?
Yeah it's nice but if you have stuff in there you lose your line of sight. And your video about ballast gave me the motivation to do this one. So keep yours up:-)