sunfish walker bay dinghy dingy sailing rowing

I need help/advice please. I want to reinforce my 11 yr. old's sailing skills. We go to the beach 2-3 times a year to sail Hobies. She can helm a Hobie 16 (Getaway) with jib as long as I'm on the boat giving instruction. In-between times at the beach I need a small dinghy for local lake to...