Here are a couple of things I would take note of:
1. Did the dealer purchase the boat from the company with or without a trailer?
Many boat dealers have additional deals with trailer companies. The parent company might use one trailer but the dealer uses another. In most cases like this, the dealer orders the boat only and puts it on their own brand of trailer.
If that is the case, it becomes the "dealers" issue regarding the trailer. I doubt that the company sent the tie down straps so that again was something the dealer put on. I've seen it many times when a dealer uses one size too small of trailer or one size too large and then they don't adjust the trailer accordingly. You say it has the wrong size hitch? I'm guessing it has an 1 7/8 inch hitch and you think it should have a 2 inch hitch? That has to do with trailer design. I doubt that the dealer (if he is the one that sold the boat) put a hitch on it. It came that way from where he purchased it. Hitches are done based on weight.
2. Did the dealer purchase the boat from the manufacturer with or without a motor? Again, if he purchased it without the motor and then installed one after the fact based on the manufacturer they represent and sell, there could be a potential issue with the setup of the motor. IE, it is too far to one side of the boat? If it came direct from the company this way, it would be the company fault.
3. Was this boat a leftover model from the previous year? This might explain the reason for your speedometer not working. I see that you live in New York. Tempuratures obviously freeze. They could have put the motor on, tested it, sucked water in to the induction line that runs the speedometer, and then had it freeze (happens all the time). Many of us that are from northern climates know and understand this and take the time each winter to remove the speedometer line, blow it out and then reinsert it to ensure there isn't any frozen water that can break the line or the speedometer. I suspect this is the case OR, the line is pinched as it goes in to the motor (or simply came off).
4. The steering wheel cover- did you notice this when you purchased the boat? If it was pried off as you said, you should have noticed it when purchasing.
5. The strap Hoops? you say the straps come loose but also the hoops? This would be a faulty hardware issue that the manufacturer should handle. OR, you could put jam nuts on it if you had to.
6. The gas tank is not secure. Did you notice this when you purchased the boat?
7. Water overflow- The hose that connects to the water overflow on the side of the boat leaks? I suspect that, like the speedometer, this had water in it and was frozen and cracked OR, the fitting or hose clamp isn't tight. Again, this is a manufacturer issue that would more than likely be fixed by the dealer.
I have no doubt that there are issues with the boat and that some of them need to be addressed but, some of the things should/could have been noticed before purchasing. Things that should be put on the dealer or the manufacturer (steering wheel cover and gas tank sliding around).
I have a side console that lists to the drivers side (starboard). Despite the fact that my unsecured gas tank sits to starboard as does my batteries. To combat this, I fill the livewell with water (on the port side). My gas tank in this particular boat also slides around because the factory didn't install any tie downs. To combat this, I purchased my own!
As for the trolling motor- they break. What can I say. They get bounced around, boards go bad, things happen. If that is covered in your warrenty, then someone should take care of it. If not, it stinks, but you have to foot the bill on that one.
I have OCD "Obsessive Crappie Disorder"