Having covered many foam wings over the years and hated the mess, I have finally got onto the answer.

Bill Evans of Simitar Models from Bishop.Cal. uses a doubl -sided adhesive tape. It is 2" wide and comes in a roll enough to cover two .60 size wings. The tape is so simple to apply and once the whole wing is covered,you remove the backing paper and what is left is a very thin and extremely light layer of adhesive. It sticks like the preverbial and does not give you any chance of errors in lineing up the skins. It is definately the lightest and easiest I have ever used.

The tape that Bill Evans originally used was made in USA. but the tape being used now is of Japanese origin.

I believe Bill is not in the best of health and the tape may no longer be available from him but it is available here in Australia.