Unity's Raycast functions has a parameter you could use to raycast to a particular GameObject. You can also use that parameter to ignore particular GameObject.
unused-variables
livebindings
rlike
xml
resizable
dropbox-sdk-js
qglviewer
elasticsearch-highlight
patricia-trie
shopt
multiple-occurrence
catalyst-optimizer
regfreecom
android-build-type
sublimetext4
docker
web
pykinect
system-variable
serial-port
multi-master-replication
android-application-restart
scite
manychats
memory-leak-detector
shutter
rootkit
dendextend
inno-setup
scrypto