When it comes to SFX recordings, there is no such thing as taking a break of me. I always have a mic with me, wherever I go :)
Im summer 2018 I went to Cambrils, Spain and got busy with water splash SFX recordings in the pool. Used several objects like a paddle, bucket, etc.
I used a MKH 418s MS shotgun for all the surface sounds and a Aquarian H2O for underwater. Git really interesting water splashes as whooshes with the paddle and using my hands, my hole body. With the bucket I did some more bubbly sounds, releasing the air underwater or pouring the water from about a meter at the recording spot.
Just for the fun of it I did some underwater vocalizations, you never know when you'll need such sounds :)