What's the plural form of tobogganing? Here's the word you're looking for.
Answer
The noun tobogganing can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be tobogganing.
However, in more specific contexts, the plural form can also be tobogganings e.g. in reference to various types of tobogganings
or a collection of tobogganings.