You have picked an awkward material to glue; nothing sticks particularly well to aluminum. Shear can be okay, straight pull can be okay but if you are bonding something that is flexible and the load tends to peel it off sometimes it will release very easily.
One thing I have found to improve the bond is anodizing following a slightly more aggressive than normal etch that leaves a dull surface. This also has the advantage that it seems to promote the curing reaction on the anaerobic adhesives. But keep your grubby fingers away from the surfaces you want to bond.
An open mind is a virtue...so long as all the common sense has not leaked out.