With 8 ft of water I think the sub-buoy/ counter-weight system might be best, as long as it is reasonably clear. You can float it/ sink it in about 20 minutes, and have a nice accurate course with little chance for issues.
I'm in 50' of water for my public lake course, so I have a Wallysinker. Works pretty well but there is a bunch of work involved in getting it right. I bought mine second-hand, which didn't help. It comes up in 15 min but we have it set a little deeper due to fishermen and boat traffic. Get the bigger pump if you go this route.
The 5 or 10 minutes you might save for an automated system versus clipping the balls on and off will literally take years before they equal the time to install and maintain a sinker. I've been told that 20' is about the max for the sub buoy approach due to accuracy, which is why I went with a sinker.