Old school off gridder here. 20+ years off grid and I started with a mix matched system of panels on my porch roof but after having to skinny out my window to brush the snow off (we get heavy snow) I moved to a ground mount system.
For 10 years I only had a 400 watt ground mount system and it is situated about 30 feet in front of my cabin and pointed true south with angle and tilt for best winter sun in my area. This is a fixed mount system so I don't change it for seasons.
That was connected to three 125Ah Vmax tank AGMs stored in the cabin, a Blue Sky 12 volt MPPT controller and an Energizer 500 watt mod sine inverter. That ran my laptop, 12 volt fridge, led lights, water pump and recharged gadgets and tools. I used the genny for running big tools and my microwave and washer.
Last year I added an ebike, bigger computer, more cooking appliances and I wanted to stop using the gas genny so I expanded my system to a second 400 watt system and I replaced my old AGMs with a 400Ah Enjoybot LFP, Renogy 40 amp MMPT controller, Weize 1200 watt pure sine inverter.
I also set up a 200 watt recharging station on a trailer so I can move that to get the best sun any time of year and I added some portable panels and power stations for camping or low sun days when I may need a backup instead of running the genny.
All together I have 1.4Kw of solar, 800Ah of LFP, several power stations and portable panels and now I can keep everything running and charge my ebike, run a second fridge, electric lawn mower, electric snowblower and I haven't needed the genny at all through last winter.
My mounts are just my old horse hitching posts with cinder blocks and panels are attached using high tensile electric fence wire and they have never moved an inch in very high winds. I have done zero maintenance in 10 years on the old system other than keeping the snow off and washing them off occasionally.
I just designed an adjustable pole mount system I want to try with some bifacial panels next year and that is the diagrams if someone wants to build one.
I am 60 now and not safe to get on a roof so ground mount is absolutely the best choice for me and with the correct angle and tilt you get more output from a smaller system than a poorly situated roof mount!