I shopping 6' wide chain / drag harrows since I rarely see them them on CL (or they're already gone).
Makers reviewed include: ABI, Agrisupply, Eezes, Everythingattachments, MayBridge, Nothern Tool, REM-Delta, Tarver Supply, Tractor Supply, Wingfields, and Wilco.
1. Pros/cons of longer...