We came across this handy tool from Vaughan & Bushnell today; It’s a hinged lever arm designed to help you straighten boards when installing them as flooring or decking. Just tap it into place against the subfloor or adjacent joist and pull the handle to bend the board into place.
Vaughan & Bushnell’s website says the tool can help close gaps up to 2-1/4″. It’s 12″ long — and weighs just 26 ounces — so it should fit in your toolbox relatively easily. All in all it looks to us like a heck of a replacement for jamming your hammer or pry bar underneath the board. Half the time you end up creating gouges in the board, and the other half of the time you just can’t find anything that’ll fit in the hold and give you enough leverage to pull everything into place.
Street pricing starts around $30.