Hi
I assume that you will launch by slipping her on her trailer. As well as Balmaha, you can slip at Balloch, Millarochy, and Ardlui. Balmaha, Millarochy, and Ardlui are ‘beach’ type slips whilst Balloch has two very good concrete slips. By road, Balloch is the closest to you and the Clyde.
You will have to register for free, though the plates and numbers will cost you £5. The ‘Guide to Navigation’ at £5 is worthwhile.
You will need to have a lifejacket for each person on board.
The south end of the loch with islands and anchorages is the better for cruising, though you are still in the lowlands there rather than the highlands so shallower (20 M ) water and less scenery.
I assume that you sleep/eat aboard and anchor.
You will enjoy Loch Lomond – better sailing though less public access to shore than Windermere.
Some Links
Loch Lomond ByLaws
Loch Lomond Info
Ardlui Hotel, Marina, and Holiday Park
Ardlui Marina Prices
My Sailing Area - Loch Lomond
I'll post more as I think of it / find it.
Ask questions, and I'll try to answer.
Ash