Jeff. The Echelon and Sporty I think are on the same hull. Like I said I think the Sporty is the replacement for the Echelon. The Response however is different. The Sporty is on the SV23 hull and the Response is on the SV23 Diamond hull. The Response has a much softer wake which is why it's one of the best Slalom boats. The Sporty is pretty hard which is supposedly why barefooters love it.
If you have a person or two in the bow, yeah water is coming over. But I've never had any problems with water coming over the back or side. We may just not have as much weight as some others