Re: Newbie needs help and advice on bowrider purchase
Regarding the size of the outboard:
On the boat there will be a Coast Guard plate stating the Maximum number of passengers, Maximum passenger weight, Maximum total weight (passengers + motor + fuel + all your other junk), and Maximum rated horsepower.
The size of the outboard should be at least 75% of the rated maximum horsepower.
So, if the boat is rated for a 150HP motor, a 115HP outboard is the smallest that would work ok on that boat.
It won't be a speed demon, and won't be best for skiing, but it will get you around ok.
A motor closer to the rated maximum would be better, cuz it wont have to work as hard, and will be better for resale. For skiing you really need that power to yank your skiier up and onto the surface of the water quickly.
It's also handy if you have to outrun a storm and need to get back to port in a hurry.
NADA prices are not really useful. A value for a particular boat varies a lot in different parts of the country, and NADA does not take this into account. One time that NADA is useful is if it works in your favor for negotiating. If a guy is asking $7000, and NADA values it at $5000, point it out to him to get the price lower. If the guy knows how useless NADA is, this won't work, however.
The two most important things to check for a used boat are the deck/transom, and the motor.
Checking the transom can be tricky, but one test is to raise the outboard to its highest position. Then hang on the outboard, near the prop. Try to bend it up and down. The transom should not flex at all.
To check the deck, stomp around on the deck, every square inch. It should not flex at all. No soft spots. If you find a soft spot, do not buy the boat. Also, if the boat has pedestal seats, try to bend the seat back and forth, to see if the deck flexes under the seat (a common rot spot, water getting into the seat base screws)
If he says he replaced the deck. Do not buy the boat, unless he can show you a folder on his laptop containing 100+ pictures of his great work, and links to an iBoats restoration thread with everybody telling him what a great job he did.
For the motor, aside from making sure it actually runs, you should do a compression test on each cylinder. You can buy a compression tester from an auto parts store for under $40. The compression on each cylinder should be over 100psi, and more importantly should be within 10% of each other.
It's also best if you can see it start when completely cold. If the seller has already warmed it up before you got there, you can't tell how much of a pain in the butt it was to get it started.
Also check the oil/lube in the lower unit. Bring your biggest flat head screwdriver, and remove the lower drain screw. You only need to let a few drops dribble out onto a paper plate or something. If you see water, or milky, or streaky, that means there's a leak and water got into the lower unit. Not good.
Also not a bad idea to check the tilt/trim. Raise the outboard to its highest position. Leave it there. Check in 1/2 hour or so. If it dropped at all, it may just need fluid, or it may have a leak. See if there's any fluid leaking around any seal.
Do not be embarrassed about anything. Ask stupid questions, stick your head into all hatches, reach down in there searching for wet foam, test all gauges, navigation lights, bilge pump, wiggle the steering wheel to see how much play there is.
If the guy's garage looks like a disorganized pig-pen, assume he was not too great with the boat's maintenance. If his garage has pegboards with tools hanging, each outlined with the shape of the tool, assume this is the anal-retentive boat maintainer guy you want to buy a boat from.
Make sure the trailer lights work. This is a cheap fix, so don't let it be a deal breaker. It may knock a bit off the price.