Q. When immersing on Shabbos, is it permitted to wear ones undershirt or wrap a towel around himself while still partially in the Mikva, in a way that they will get wet?
May one put on his clothing with wet hands?
A. Rema (O.H. 301: 46) rules that one may not walk close to a place where one may slip ans fall in the water and come to squeeze out the water from his clothing.
Poskim indeed warn of walking close to a slippery are next to a swimming pool or a lake for that reason. (See 39 Melochos p. 724 and others).
Rabbi A. Bartfeld as revised by Horav Dovid Pam, Horav Aharon Miller and Horav Chanoch Ehrentreu Shlit'a