In reply to G7ADF:
Ben Bowie SS-251 is only 3.2 miles as the crow flies from Balloch. The OS map suggests it would be a doddle to climb. About 230m of ascent in total. Most of the route is along a Forrestry Commission track with only 600m up a firebreak onto the summit. Total about 2.7km from car to summit.
Conic Hill SS-240 is 7 miles away but probably at least twice that by road. The West Highland Way footpath runs across the flanks of this hill from Craigie Fort on the banks of Loch Lomond. About 360m of ascent and about 2.3km from the road to the summit. It’s a bit steeper than Ben Bowie though.
I’m not sure how good these are for VHF working. Glasgow is not far but is hidden a little by nearby high ground. Load Google Earth and the SOTA overlay and check yourself. I find the Geograph website invaluable to show me what the land is like along with the Get-A-Map page from the OS website.
Don’t be put off by the low activation numbers as there aren’t too many activators up here. In fact with less than 30 activators and 1214 summits to do most summits have very low activation counts.
Tinto is a nice easy 4 points though. There’s a big car park at the base and someone of average fitness should be able to get up in under 90mins. The big car park is the hint. This is a popular hill and in good weather I’ve seen over 50 cars at the base! There’s a cafe at the base but it’s never been open when I’ve been near. The Abington M8 Services are 10 miles away if you want a wash and drink after the walk.