I find the lack of a putting tube for bag used on the golf cart to be a pain.
I solved my issue a few years back, got a plastic golf club tube, oversized diameter. Since I rarely need an umbrella I stuffed the tube down the sheaf/pocket (trim for length) and use it for a putting tube. On one bag i slid it in the big side pocket with the rain gear and closed the zipper up all but the width of the tube.
Have also with limited success fit in on the loops/ties for the umbrella. But this usually requires closing the bottom and having some sort of clip to secure it to the little pointy pocket at the bottom.
When no on cart, I normally put the putter in the bag for protection.
Oh, currently using a Ping Hoffer Lite as my primary bag.