Supra owners ballast gauges?

Question for you Supra owners. Do your bag ballast systems come with gauges? If no, how do you tell when they are full, do you look at them, or do they vent overboard and that's how you tell?
thanks,
Jack

They vent out the drain lines, you can usually hear them from the helm if you don't have the stereo cranked.

I usually look at mine. I have upgraded bags that can expand way past the size of the lockers the bags are in. With the stock bags yrou safe just watching for water pouring our the drain.