Tipping Guides at Blue Hole and River Tubing?

[FSUDAVE]

Can you give me an idea of what to "tip" the guides at the Blue Hole and on the River tubing excursions? I realize it would depend on the "level of service" received, but looking for a ball park figure per person. Thanks.

[rickysmom]

I gave the young man that assisted me at the Blue Hole five dollars. He said thanks and didn't look offended. Hope it was the right amount.

[VermeulT]

I did $5 per person for our group (of 4) or was it $15 for the 4 of us? I don't remember... but it was in that ballpark.