Chain grab hooks attach to the FEL bucket, not the FEL.
Two bolt on chain grab hooks from the premium supplier, Dan's Bolt On Hooks, cost around $30. SPLURGE.
However, I also have pallet forks- and I guess I could also just wrap chains on those….
"Wrapping" is not a good idea. However most chains used with tractors have a slip hook on one end and a chain grab hook on the other end. So you could use the chain slip hooks to create a tight, noose.
I cannot immediately think of a situation where Pallet Forks would not obviate the need for bucket chain grab hooks.
I'm thinking you might mean Ken's Bolt on Hooks? If that's the case I would also recommend them.