If I understood you correctly "Right click block" widget should help you. To make"Right click block" widget work: log in to your website-> Enable Builder->add block->place it in one of the containers->press "Block content management"->Widget->Right click block->Apply
Are there any ways I should be aware of that members might get around it?
What do you mean? Please be more specific. You can always check statistic to come to know about it. -Moved to Additional Features-
The right click block widget is helpful but it's easily avoided as you can use Ctrl + C or Command + C to copy the text... There's some code to make it so you cannot even select the text but I've no idea how to get it xD