I have not done the 380 to Lake Lewisville trip, but did make the mistake about a year ago of putting in behind Ray Roberts dam to float ALL THE WAY down to the 380 park...because a buddy said it would be fine. It took all stinkin day and we did not catch a fish (mostly dealt with trying to get down the river), had to portage around several log jams and get out of the canoe to drag it over low water.....I was beat the next day, good thing we went on a Saturday.
I should have done my homework and made it a shorter trip and waited until after a rain for the water to be a little higher.
Would be interested to know if you can canoe from 380 to Lake Lewisville...and where you would take out....I'd be interested in that trip. I've heard the fishing is good too, just never done it yet.
Cheers,
Ken