Watch someone do something (Verb nominalizing)

[fatedquest]

How do construct a sentence to means "watch someone do something" such Kaede watched Kenji sliding into the pool.
So I'm faced with these two sentences
1. Kaede watched Kenji slide into the pool
2. "I like it." he says "See me do it again"
1. 憲次がプールえ滑っている(の)かを楓は見ている
2. 「好きだ。もう一度する(の)かをみてください」彼は言った
Here I'm 99% sure that the particle の acts as the norminalizer for the predecing verb. However I'm too sure if the way I'm using ーかを is correct or natural here.
I found the double particle ーかを in the dictionary and it seems it's used as a the particle set an action done by subject A onto another action done by subject B.

 

[Toritoribe]

Kaede watched Kenji slid into the pool.
憲次がプールへ滑っていくのを楓は見ていた。

Here I'm 99% sure that the particle の acts as the norminalizer for the predecing verb.

Yes.

However I'm too sure if the way I'm using ーかを is correct or natural here.
I found the double particle ーかを in the dictionary and it seems it's used as a the particle set an action done by subject A onto another action done by subject B.

No. か is used to make an indirect question clause.

憲次がプールへ滑っていくか（どうか）を楓は見ていた。
Kaede watched if Kenji would slide into the pool.

The following post/thread might be somewhat helpful to understand the nominalozer の.
koto

 

[fatedquest]

Ah, the reason I'm confused is because the dictionary game these translations.

Watch what he is going to do. 彼が何をしようとしているかをよく見ていなさい.

Watch how to do this. どうやってこれをするのかよく見ていなさい.

It doesn't sound like an indirect question clause.

 

[Elizabeth]

Ah, the reason I'm confused is because the dictionary game these translations.

Watch what he is going to do. 彼が何をしようとしているかをよく見ていなさい.

Watch how to do this. どうやってこれをするのかよく見ていなさい.

It doesn't sound like an indirect question clause.

彼が何をしようとしているかをよく見ていなさい.

Watch and see if he starts doing something/Watch him to see what he is going to do. Is he going to do something ? Watch.

Watch how to do this. どうやってこれをするのかよく見ていなさい.

How do you do it ? Watch closely.

 

[Damicci]

So would you have to put the watcher of the action at the end?

Say for example:
楓さんはけんじさんがプールへ滑ってるのを見ました。I figured this would be how I would have said it if I was having a conversation about something.

 

[Toritoribe]

So would you have to put the watcher of the action at the end?

Say for example:
楓さんはけんじさんがプールへ滑ってるのを見ました。I figured this would be how I would have said it if I was having a conversation about something.

Both are correct. You can put the topic at the beginning of the sentence or before the verb.