Tool - Concrete Placer
Goldblatt G16119 Steel Concrete Placer with Hook
https://smile.amazon.com/gp/product/B00004Z4JK/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1 $20 - $33
You don't actually need a hook (as you will have tied your rebar properly).
If you are prepared to add your own wood handle then a good choice is...
Bon 22-326 19-1/2-Inch by 4-Inch Steel Concrete Placer without Hook
https://smile.amazon.com/gp/product/B0011MRVL2/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1 $17.12