I don't think you have triangle head at all. You can get good clumping with either a good leave in conditioner or a curl cream. Recoil will probably help, my Beauty without Cruelty leave in clumps my hair well if I scrunch the product in real wet hair rather than rake. Also scrunching in product with your hair hanging upside down will help clump all the way to the roots.
I bet if you play around with conditioners and curl creams your hair will get curlier. You look like you have a nice strong pattern it's just not corkscrews. You have lovely hair, I'd work with what you have!