Hi Jeff,
The advice is right. It is a big person's boat, insomuch as I have 30kg on you and the SLR1 paddles perfectly for me. I have had mine since last August and use it for club Time Trials, fitness training and the odd PaddleNSW marathon series race. Having come from sea kayaks to skis, racing the SLR1 is like paddling an old friend (in most conditions).
The trick with the SLR is to get it trimmed right. Got to get that bow down into the water as the SLR has minimal rocker. It is a flat water, bay and estuary racing hull. You are not going to get runs on it (you do get minimal assistance downwind) and it can take some getting used to in side wind and chop. But as the old saying goes...practice makes perfect. The other thing is to learn to brace with your knees/thighs under the cockpit lip.
Now, the biggest piece of advice I can give you is get a Bumfortable foam seat. Most of us who race Sladecraft SLRs, Flashes or Comets have fitted these. You can get the kevlar seat base off Greg Slade and the bumfortable seat off him or Pro Kayaks in Sydney. Why the bumfortable seat? Much lower centre of gravity and enables you to brace and leg drive much more efficiently and above all...avoid the numb bum syndrome!
Only problem I have with the SLR1 is club time trials. I keep improving my time and the buggers keep increasing my handicap!
Mick
PS. Found that maximum strength Araladite is the best glue to attach the seat to the base. 10 months and still going strong for me.