We have the same problem too - she just wants to wander, so now we put her in her little baby bath, in the big bath, so that limits her to where she can go, but we have also discovered the baby toothbrush is the perfect distractor! She LOVES to brush her onwn teeth during bath time and this gives us time to wash her hair, etc. When she does get a bit tired of it we then brush them for her which she loves too (thank goodness!) and it is usually time to wash her bot anyway so while she is standing we do that and she's out. Now that the weather is getting cooler I will probably get in with her again more often, so I can limit the damage!! I also need to get some of those non-slip stickers - thanks for the reminder!
Good luck - I hope you find something that works for you!