Someone just told me welding can make aluminum weaker. Thoughts? He also thought that because I have a cross bar support broken this is flexing the boat too muck and causing my patch to crack or separate from the boat. More thoughts?
The Cracked support will let the rest of the area flex more causing more problems.
I don't believe that welding aluminum makes it weak unless done wrong, like to high of heat making it brittle and taking the strength out of the aluminum on each side of the weld, not enough heat making a cold weld which will crack/separate from vibration.
Speaking of vibration that is what is the biggest killer of Aluminum, IMO, so your trailer needs to be running its best also, to minimize vibration. The list goes on and on.