hello,
Well, ticks are always an issue with outdoor activities. Just think of them as being insects and not to fear them. Just remember to check yourself and dont let ticks ruin your fun.
The amawalk outlet is nice, you could also try the croton falls outlet off buterville road right by rt 202. The east branch outlet is nice too in the village of brewster. I had some luck fishing boyd's corner outlet off i think rt 303 or 301? Its going towards cold spring. Its a small small stream thats maybe 8 feet wide and about 1.5mile long, but i have pulled large trout out of pockets in there with nymphs. i was pretty surprised pulling out 16" brown trout from such a small stream. I had 5 hits in a row last time i went. I never fly fish on the weekends though because the streams are so busy. Hitting any of these streams during the week is much better if you have the time. Good luck.
-John