Adjustable Solar Panel Holder for Boats

Adjustable solar panel holder for sailing boats. Panel swivels and tilts manually. Currently used with 50W solar panel.
M8 nuts
M6 nuts and bolts
30 mm diameter aluminium tube with 2 mm wall size.

Use 100% infill for all parts as these are required to withstand mechanical stress.
I used 20x20 L aluminium profile bolted to sides of solar panel to improve panels rigidity.
Tube holders