I've experimented with both a lot over the past few years, my thoughts:
One line system:
-Physically easier to hoist (2:1 advantage on the halyard)
-Less mental requirement (i.e don't need to remember the tack line)
-Douse always works (no tack line to forget about, cleat to not release, etc)
-Takes slightly longer to hoise (twice as much line to pull), for me, about 2-4 seconds longer (yes, I'm not the fastest hoister, I'm also not the slowest
)
Two line system (what I have settled on)
- Can pull tack out ahead of time. Only time I don't is if their is no offset mark (which makes me mad at the PRO) AND the wind is heavy (25+) as the wind can take the kite out of the bag (happened once, not a huge deal).
- Faster hoist (direct 1:1, I can get it up theoretically twice as fast)
- Harder hoist (1:1, taking the direct load of the kite).
- Need to remember to pop the tack line on douse (C2 is rigged in a manner that this is supper easy now and 99.999999% reliable)
Basically I've gone to the two line system, I pull the tackline out from the wire before the bear down, let the downhaul off, let the rotation out, ease the jib sheet either all from the wire (if conditions warrant it and timing of the bear away) or from in the boat and hoist.
I also prefer standing up to hoist so have a higher placement of the cleat on the mast then what I've seen on the Infusion and some Capricorns. This lets me get the last bit of halyard as I "fall back" into place as the boat accelerates as well as keep my elbows out of my skippers face (he insists this is key for him to drive well, I disagree...)
Now my cards are all on the table
In this context: may I ask how you get along with the 2-line system (sepearate tack-line) of the spin? Apart from less clutter on the deck I'd assume that pulling just one line is faster than two ...
And thanks for the response to my initial question!