Sure will not hurt to give it a try. The aluminum angle should be at least 3/8" thich and an inch wide with 1/2" by 3/4" wide being better.
If you have access to a truck salvage yard you can get aluminum frame rail pieces that have very good strong aluminum.
Aluminum doesn't flex well. It fatigues easily. So make sure they are ridgid and the rubber does the flexing.