There's nothing worse than a 90 degree dogleg.
Other than a 95 degree dogleg.....
Have posted this before, but my mentors summed up sharp doglegs with "There are only two situations where sharp doglegs don't work - 1) where there are trees, and 2) where there aren't trees.
1 is too problematical for those who don't make the corner, and 2 makes it too easy to cut the corner.
When I designed Tangleridge in Texas, we had to move the green due to wetlands, and the 14th came out as a near 90 degree dogleg, but it goes around a pond. I gave it a wide fairway with no hazards. However, hugging the lake gives you a 35-40 yard advantage on the approach over playing it well wide to the outside of the dogleg, which is enough temptation to play it close. Works best if the 3 club distance takes you from about 7 to 4 iron, as the 4 iron is much harder to hit. Taking it from a W to an 8 wouldn't induce the same fear and you would play safely.
The other sharp dogleg that works (for me) is a 45 degree or more when you have the alternate challenge fairway on the inside. Same principal applies, dogleg needs to be pretty sharp to attain the required for temptation 3 club approach distance. Also, works best on long par 4 IMHO, since you can cut the approach distance from 180+ to under 150, if laid out right. Of course, allowing chance to reach par 5 in two works also.