Tractor Zoom in Waukee and WindSmart LLC in Des Moines were awarded state demonstration fund loans of $100,000 each by the Iowa Economic Development Authority board. Tractor Zoom, which has developed a digital advertising platform for heavy equipment auctions, will use the money for hiring key personnel, product refinement and market planning and market entry activities, according to a release from IEDA. WindSmart, which supplies a proprietary roofing system for large, commercial low-slope (flat) roof applications, will use the funds for engineering, database development and IP strategy, according to the release.