I tend to go with the standard symbol used by analog IC communities - like a BJT (so arrow towards the 'gate' line for PMOS, away for NMOS), but the source and drain lines are perpendicular to the 'gate' line, instead of at an angle. So kinda like a JFET, but with the arrows like on a BJT.
This is simply the way the community I work in has agreed to do it. I used to try the more 'correct' symbol as dictated by standards but the only thing it achieved was to confuse people looking at my work.
Image of the symbols I use: