Sun Shade
You can buy a cheap fabric sun shade, usually in auto section of a store, that is circular and costs less than $5.00, it attaches to canopy bubble with 2 attached suction cups. Then if you have direct sun you want to block you can take any piece of paper, 8 x 11, or so and stick it between the gap that's caused by the suction cups that holds the shade in place. You move it to whereever you need it. Works for me in my RV-4