On Glorious I like the swing mount arm that enables me to view the display at my chart table position or swung out to view from the cockpit. I have a B&G Vulcan 12R MFD for radar and chart plotter functions.
I’m also going to do a rail mount for my iPad in the cockpit if I have to close the companionway hatch, if necessary. There are lots of choices with all kinds of price points for the rail mounts. Take your pick. Here is the one I got off of Amazon.
https://www.amazon.com/gp/product/B09GTRMHSL/ref=ox_sc_act_title_1?smid=A2LD6TIA3OE10C&psc=1