Slip
 

I am thinking about keeping my boat in a slip this year. Is there any precautions I should take? It will have new bottom paint and bilge pump but other than that is there anything else I should do?

at least two 2000 gph bilge pumps

And dual batteries for them. If you have a big seagul population do not leave any crossbar type thing like an enclosure or bimini top up when you leave.
Make sure what ever your self bailing set up is on your V is clear and clean. It will eliminate most concerns. Which means dont leave anything on the boat which could be blown down or float over to the scuppers.
Remove all electronics, that means don't leave them or any valuable rod/reels onboard when you go home.
Invest in good bumpers if you are on a finger pier and good stout rope. Learn to make a proper spring line if you are alongside a finger pier and to do it you really need a center cleat on your V, most did not come with them.

sounds like the voice of experience!!

Only one year, but many friends that slip it. I have been in a rack the past four years.

zincs.

Good point chuck..... I have mine changed every season.....

Willie, what are bumpers and ropes? j/k
Make certain your 150 tilts completely out of the water. If not, paint the lower unit with outdrive anti fouling paint. Do not use boat bottom paint. Prep the unit by sanding, then zinc chromate primer, then paint. Don't paint any zincs.
Dual battery switch
Dark blue or black seems to be he best colors for bottom paint in my area of Florida. It just seems to last longer than lighter colors. Why, I don't know. I've had very good luck with Trinidad SR paint. Make sure your guy sands or etches the hull and primes (2 coats) and bottom paints (2 coats).
Maybe a cockpit cover from windshield to the transom. Mine kept the cockpit clean and
no rain water to deal with.
I enjoy slip storage and I've also enjoyed rack storage. Of course, the closest I've ever come to a divorce was at the boat ramp. I have a tendency to start shouting orders. At times, it's been pretty ugly.
Constantly check all hose clamps and hoses on your thru hulls. Double clamp if you can.
Good luck and enjoy.

1 other thing

Therm spoke of zincs, they are a good thing, just don't think more is better, because it can work against you with aluminum (outbd or outdrive).
Make sure yours are still healthy (thickness & length) and replace if not, also you can add another but attach it to the swimplatform to direct some of the electrolites away from the aluminum.

Test data I did with the Navy on Submarines showed more is not always better.

Just my .2 cents.

Thanks guys, it already had a coat of bottom paint so I will just be lightly sanding then adding another 2 coats. Zincs are good and I will be probably keeping my camper top up to shed most of the rain. I do have a concern though since my boat is a 78 and my deck only drains into the splash well. I already have a two battery setup so that is nice. So I guess I need to add another bilge (questions to follow on that).

I thought about rack storage and still might but, I liked the idea of being at the dock swapping fishing stories and finishing off a few tall cool beverages, and crashing on the boat since it is a 90 min drive home. (I have a few friends that keep their boats there as well).