My Dad's got a Goldwing Trike. Thing is as big as a car (it's the ONLY one of their vehicles that lives in the garage
). He rode regular bikes when he was younger, then got the Trike a couple years ago; he's got medical issues, which can leave him tired more than anything. But it's perfect for my parents; my Mom rides 2-up with him, and he goes on a lot of cross-state adventures with his friends.
He took me for a ride when I was out there in June, and it was actually a lot of fun. Not my cup of tea, but they love it.
And handling isn't SO much of an issue for them, since they're in West TX where the roads are straaaaaaaaight and flat.
And Trip, as for convertibles, they looked at a few a couple years back, but at 6'6", he looks OVER the windshield on most of them.