Checking the through hulls is very important, of course; however, ultimately, you will have to check every
single thing that works via electricity, and some of it may have to be replaced, some of it large dollar stuff like autopilots, but also
AIS,
VHF, phones even
battery operated stuff. Check all of it. Then
work out how to get stuff to turn off. Might think about checking the anenometer, to see if it is still close to right. (You need to find somewhere you get get live indication from a calibrated one and you are very close to it, and it is somewhat similar to your
mast height--a big pita to find! But, maybe someone at a local
airport can help you.)
Sorry for the misfortune.
Ann