Re: Speed/Depth/Wind conundrum
I have not read all three pages of posts so bear with me.
Is there current where you sail? If not, just go with a depth sounder that shoots through the hull. No holes and you get a nice picture of what's below you.
That Lowrance for sale on Amazon is a bargain, I have a similar model. No complaints for the first year.
If there is current than you might want something that gives you speed through the water. I find that I don't use it as much as I used to because I have gotten used to the currents in my local haunt. If I'm going someplace then I need current predictions more than anything because I need to know what will be happening in the near future.
That Lowrance unit shows the predicted currents. I also use Eldridges, but, I see you are in Indiana so that might not apply to you.
If I was cruising into unknown waters or racing, then, speed through the water would be an absolute necessity.
'88 C&C 30 MKII