[Stiglr]

But, how does the juncture look? If it looks "patched together", rather than one fuselage, try extrusion. You'll get a smoother, cheaper (in terms of polys) result.

(I'm assuming the purple bit is the very end of a tail, and the yellow part is the rest of the empennage or the entire fuselage. The junction between the tail section and the rest of the fuselage should be very smooth, and any seam imperceptible to the eye, in most cases)