Brian Curtis probably will reply with more and better information than I can provide, but I’ll offer a couple bits. I’d recommend you visit Hi-Lakers club meetings, and Trail Blazer club meetings. You can find the Hi-Lakers website with the following URL: http://www.hilakers.org
You can find the meeting place, day, and time by following a link or two. I can’t find the meeting place link on this Trail Blazers web site, so you’ll have to wait until Brian replies (he’s the webmaster).
I am assuming you want to hike to mountain lakes, most of which will be off trail (less crowded, more enjoyable trips, usually better fishing). By attending meetings, you can meet members, learn about anticipated trips (and who went where when and level of fishing success), and ask to go on planned trips. Some trips are over night, but most are one-dayers.
I won’t add any more details here. You will learn a lot by attending meetings. – Mossback