The Vortex 8x25 Solo Compact Waterproof Monocular is not intended for use with golfing. It also is not capable of ranging objects like a pin. I would recommend using a dedicated rangefinder for golf ranging purposes like the Athlon Optics Talos 800 Yard Golf Rangefinder, found by using the link below:
https://www.opticsplanet.com/athlon-optics-talos-800y-golf-rangefinders.html
Using a Phone Skope mini-optic adapter, as well as an appropriate Phone Skope cellphone adapter, like the Lollipop Universal, you can absolutely pair the Solo 8x25 to a smart phone!
Here are some links to the adapters:
https://www.opticsplanet.com/phone-skope-lollipop-universal-phone-case.html
https://www.opticsplanet.com/phone-skope-optic-adapter.html?_iv_code=2CJ-BA-OPA-U-1
No there is not. This meant for hand held monocular.
The larger model linked below includes a utility clip:
https://www.opticsplanet.com/vortex-solo-36mm-monoculars.html
There are no lens covers for this unit. The objective end is tapered and there are no "extended" eye pieces for the ocular lens.
No, it is a monocular which is used to magnify the images of distant objects.