Since I can't edit the last post to have a picture.
Recommendation for a big ollie, go fast, cut hard, use technique, and pick those legs up as high as you can. Pretend you're going to grab the board. Somewhere along the line after this I lost my ollie technique and I can't ollie worth jack anymore. I'm also 6'5", just so you know, since that can help put this picture into proper perspective.