Been meaning to run a bead of silicone caulk around the outer edge of the spoiler for "waterproofing" and "reinforcement". Of course, both may be a futile attempt only prolonging the inevitable of the spoiler separating from the trunk lid. Be that as it may, an ounce of prevention is [still] worth a pound of care.
#NEVER GIVE UP
#AUDACITY OF HOPE
"Rather not run the risk of offending anyone, so let me just go ahead and offend someone". -PONY MAN
"When you write the story of your life, don't let anyone else hold the pen". -UNKNOWN