We have been in valet/rack storage for the past 10 years and it was the best for us. We cannot be up every weekend and do not have a place at the lake either. If we had rented dock space we would not have used the boat enough to justify the extra expense. We did think about it but that is as far as it got.
It takes an hours notice, sometimes less, to have your boat put in. If you came back late, after 5 PM) you might find they have also stayed late when they expect a lot of late returns or there is normally enough space to tie up almost like rafting and they wil take care of your boat in the morning. I have even left my boat down at the gas dock when there was not enough space at the valet docks. I have never been unable to find a place to leave the boat when I returned late.
As far as damage we had one occurance of a gunwall bumper being dislodged. It was easily put back in place. 
This year we will again be in rack storage with Fay's Boat Yard. It is an excellent location on the lake and it has great access from anywhere to the south of the lake. The staff is friendly and always helpful. 
There is one special difference at Fay's in that you can work on your boat yourself unlike most other locations around the lake where it is manditory that you use the marina's people and services only. That costs you more too. Fay's is a Boat Yard and not a Marina. 
Fay's is very popular and that is backed up by the fact the rack building has full occupany for the 2014 season already. This years per foot cost is $75 for the valet. Very reasonable.
 
I have no affiliation with Fay's Boat Yard or anyone who works there.  
 
Well that is just my opiinion now back to your regularly scheduled banter.