Foxmoth says:
raising flap from full will reduce drag, but you will probably need to lower the nose for a slightly higher best glide speed
Agreed. For the Arrow, the best glide speed with 2/3rds flap is about 85kts and about 80ks with full flap, so a little nose lowering would be in order. FWIW, I noticed that there is virtually no sink when raising full flap to 2/3rds on the Arrow..or indeed any of the aircraft I've flown with flaps (with the possible exception of the AA5). I would not remove more than the last stage though!
Human Factors wrote:
If you're coming down short finals at significantly more than that in a light aircraft, you're more likely to over-flare and cause yourself a problem.
I agree with F3G. I don't believe that a steep approach is particuarly challenging. As mentioned before, a full flap glide approach in an Arrow feels more like a dive bombing exercise. Even a barndoor flap glide approach in a 152 is pretty steep. But is pretty much bread and butter flying...really...IMHO.