Does anyone have experience with "Aqua Power"muffler tips. I'm looking to quiet the exhaust without buying both tips and clamp on mufflers. My current tips are too short to clamp on mufflers.

Have you thought about inline silencers? Here is Hardin's page for a starter.
Hardin Marine - Inline Silencers

The bend in my rubber exhaust prevents me using these. I have used them in the past, but I cant on current set up. Thanks