Twinmotion is my “go to” rendering package at the moment. Like @endlessfix I’ve also used multiple rendering packages over the years (mostly ray-traced). Even the free ones like Kerkythea can take a fair amount of time to render an image and when you realise a mistake, well you render it again at the cost of more time. This, of course, after you’ve taken days & weeks of your learning how to operate it in the first place. There are some ray-traced packages that dumb down the process BUT still need time to render out a final image.
Twinmotion (and the like) are NOT ray-traced, which give them them the ability to be ‘live rendered’ and hence output images quickly. Client’s won’t notice if it’s not ray-traced as evidenced by @endlessfix examples. If you leave it linked to your SketchUp model, then any changes you make in the model are quickly refreshed in Twinmotion and instantly rendered. I had a pressure situation a couple of weeks ago and TM did not disappoint, even with a few design iterations. It really showed it’s value.
In terms of operation of the package, I think it’s simple. One navigation pane (kind of like layers in CAD - make things visible or not), one context menu (materials, assets, basic primitives etc) and one tools menu (fiddle with shadows, vehicle paths, edit context menu items etc). Of course I had the benefit of having fiddled with ray-traced software and gaming engines previously (far more complicated).
Last thought though, presentation is not always about photo-realism. I knew a lady in an architectural office who used MS Paint to bring life to a design. Truly amazing what she accomplished in such a basic, throw it out the window type, program). So I’m reminded of someone who posted tips and tricks for native SketchUp presentations. Just can’t remember the name and it might have been on the previous forum (it was that long ago). @DaveR I’m sure you were around back then. Was it you? Adding reflections in SketchUp water etc
Quick, practical comments - some people on the dock would add value and I agree with the previous comment about maybe a treeline on the shore, even you fiddle with the SketchUp ‘fog’ for added depth and emotion to the image. (i.e. blurring out the shoreline slightly). These are small time costs.