For years I never had a tractor with a ROPS. Then my "helper" borrowed my little Bota and slowly rolled it onto its loader frame while trying to carry a rock over uneven ground. When I arrived he was just changing his drawers....My next tractor came with a ROPS. Now it has a 1/2" plywood sun/rain/snow roof. This roof holds the radio,speakers, front and rear driving lights, cigar lighter/power outlet etc. The rear is clamped to the ROPS and the front is supported by two uprights bolted to the loader frame.
These uprights are in just the right place to grab when climbing onto the tractor and have the light and radio switches mounted one above the other on the left hand one. This winter I hope to hang a piece of lexan between them for snow plowing