A shared shower is really a great start to a punt. I've found that some wgs aren't quite into it. Maybe they worry about genital contact. They don't want too much body to body contact esp when changing places, which is a shame.
The best showers I've had have been with a Spanish prossie. Get under the shower with her and then she unloads a good squirt of gel on her tits and gives me a good wash with them. Can't beat it.
I haven't tried baths yet. I'd only consider them toward the end of a two hour + punt, if I know I won't cum in the remaining time, something on the list to try.