I've seen folks just anchor off the rear on boats like this. Its not ideal for long term anchor, or overnight, but your HTM has a high enough transom that you don't have to worry much about the anchor dragging you down to the point of taking on water.
Might try this: Cut a length of rope that is a perfect reach from your "bow eye" over to one of your mushroom cleats. Tie this rope off when you launch the boat, and tie the loose end off to one of your mushrooms. When you get to your anchor spot, undo the end at your mushroom cleat, and attach it to the end of your anchor line. You might need a boat hook to retrieve anchor later in the day, but those are easy to work with. Maybe also install a pop up cleat in the center on the top of the bow in the center.