probably depends on the make of grapple and where you weld on the hooks. If I assume they're on the fixed side,close to the hinge points..'should' be 'ok', maybe..... Might (should ? ) be easy to just hook the hook onto the grapple frame there ??? Or even loop the chain around and grab itself ?
The hooks on a bucket(welded, bolted,slide on) are strong since they are really close to the SSQA mount.