Re: first day out
Then there's a few things to keep in mind:
1, A depth finder is typically only useful at low speeds, and a fishfinder is more useful as you can watch the bottom contours. Keep a close eye and you will see the bottom come up as you enter the shallows. I keep my depth alarm at about 1-1.5` deeper then I need to boat safely. Thus, I have time to cut power and raise the drive the alarm goes off unexpectedly.
2, When on plane (tubing) you run a lot shallower then when tooling around at 15mph. So you've been lucky, hitting bottom at plane will do lots of damage, and possibly cause injuries.
3, A lot of small lakes have levels that vary quite a bit through the year. Again, you've been lucky to only damage a prop. These small lakes also typically have decent visibility. If you see vegetation, it's a good bet the bottom of the lake ain't that far away. Keep yer eyes wide open at all times, look up, down and all around whenever you are under power. Up, because our local small lake also serves as a runway for float planes now and then.
Ian