Does my dock need to be tied down?
Inherently, any aluminium dock is more apt to damage in adverse weather conditions simply because of it’s lighter weight.
Whether or not the dock should be fastened down is entirely up to you the owner, and usually depends on how exposed your lakefront is to severe weather.
You know your weather conditions best, so you may decide to tie down your dock.
Some will use screw piles or some other securing product available online or at local hardware stores.