LPO is a really great lake :thup . We have met with a group of fellow "blow boater's" there for several years and it is fabulous. The state park "Farragut", on the southern end, is a great launch site with plenty of parking, and the fee is reasonable, either day or annual, and when we were there it was fairly well patrolled. I would advise to arrive there before 3-4PM to be able to check in for the duration without having to drive back to check in the next day to get the permits. Just to the south a few minutes by C-Dory time, is Button Hook Bay, with substancial docking, good anchoring, and 360 wind/wave protection. In August, fair warning, it will probably be HOT and it is not uncommon to have late evening, or night time thunderstorms. There are several "forest camps" along the (NE) shore, Whiskey Rock was one of our favorites. As I remember there are some shallows around the Clark Fork Delta, but I didn't know about the "Fishn Map"s then so we just watched for the bottom, since the water was clear enough to see down 20 feet or so.
Also, The Wooden boat show is great. There are some real spectacular restorations there. Priest Lake is another nice stop, close and beautiful as well, with some sandy beaches and islands.
At this time, don't know if we could make it but sure would love to.

It's about a full days tow from home now. Hard to do for a weekend, but maybe we could stretch it a little.