I wouldn't listen to him... It doesn't matter if the transom isn't straight (None of them are), you can rotate the transducer so it's sitting horizontal...
Contractors and the people that use their truck to make a living will disagree with you. It doesn't get much more reliable then the 350/4L80E combo GMC has been stuffing in their trucks for the past 20 years.
BB that poor Toyota of your would puke it's guts out if it tried to tow what my oldmans Duramax does :)
Brian, switch those mornings for evenings and you'll have a way better chance at getting them on top You can get hatches in the morning, but it's a rarity. After a nice sunny day the bugs will be going well before dark.
This is why people really need to be aware of what they're posting.. I don't post many threads anymore and this is the reason. No way I'm giving away info/conditions to someone who's just going to exploit the resource.