Using your photos...
Cleanly rigged 6:1 system. Each additional purchase ratio makes pulling the sail in easier, but requires more line and doesn't feed out as well. 6:1 is the current standard for Hobie 16, but using two triple blocks rather than stacked as shown. Triples allow more mast rake aft for better over all performance. With these, you should rake the mast aft till the blocks touch together or nearly do when fully tensioned.
Move the bolt / plate forward to hold the rudder forward in the lower casting. Too loose and floppy and the upper arm disengages without tripping the cam open. Rudder movement aft causes more "weather helm", boat pulls hard to windward and you fight it. Rudders forward balances the helm for easier and more positive steering.
Jib "traveler" adjustment. from my earlier post...
On the jib traveler... You are missing the bungee that pulls the cars to center. The traveler (White) line and cleat pulls them outboard and the bungee pulls back towards the mast. You can use a single length (of Bungee) between the two cars or two separate lengths from each car to opposite corner casting.
Leave them close to the mast for upwind sailing and all the way outboard for down wind sailing. Some high wind techniques call for moving the car outboard a bit when sailing upwind.