I also have stayed at Houma on my cruising sailboat. No use for heads or showers either.
I don't think it's the type of boat, it's the size. Most boats under XX feet don't have showers. Many have heads, but not friendly.
I stayed at Houma under Mr Rays vigilance last month and two guys were on a 32' fast offshore fishing boat. No shower. And a suitcase sized head. They took showers on my boat.
They were heading to Key West. Burning 30 GPH. They had a budget that well exceeds mine. They will pay the extra fee. And will be happy to do so. They ate onboard.
I do not have those exorbitant costs, hence Houma restaurants see my visits.
I suggest a pay as needed venue or nothing at all. The docks are great. Open up showers and heads, Mr Ray will need help and they will be used and abused if they exist. Just sayin.