Where to have a skinny dip in Highlands?

[Il_lore]

Hey everyone :)
I will be spending a few days in the Highlands with a colleague, and I am wondering where I can have a skinny dip there.

Approximate plan is:

   
• land in Inverness on july 6th
• Loch Ness on july 7th (might be a good occasion for a dip, hoping the monster won't eat me) and sleep in Fort Williams
• Fort Williams to Mallaig, then ferry to Skye and sleep in Stenscholl on july 8th
• Skye, Skye, Skye on july 9th
• back to Inverness with plane at 8pm on july 10th

Do you have any suggestion on secluded beaches where to get completely wet? :)

[Il_lore]

... for sure in loch ness :D