I'd contend that Douagh isn't as ugly a hill as MadFrankie would suggest, with fine views from it's slopes towards Manorhamilton and Benbo especially. Plus it's always good for the soul to be in Lovely Leitrim. The summit is easily reached, and you can drive within about 30 metres of the trig point. I'd also suggest that this is probably the best way to walk to it to, unless you're a glutton for hardship. I'll give the driving instructions as if you're driving.

Although not shown on a number of the mapping databases there is a decent quality bog/forestry road at G 92054 42113 A this road for about a mile and a half, until you come to a junction with a track (again decent quality) going off to the right. Take this track until it's end and the trig point is about 30m to your left. Linkback: https://mountainviews.ie/summit/572/comment/20618/

Whilst neighbouring Thur has at least some shape with a knolled summit, Doagh is a plain old spud of a hill, as you can see from this pic taken from Thur, to the southeast. Quite wet on it's upper reaches, if my memory serves. Linkback: https://mountainviews.ie/summit/572/comment/4456/