I think the problem of running over the spin sheet can be solved by not sailing as low a course during the takedown - the sheets don't get pulled out in front of the bow. This has been my experience so far (I was also running over the spin sheet on occasion). You might also consider posting your question on the open forum - between the I-20, I-17R, etc. there is a fair amount of history/experience with pole-end snuffers.
Regards,
Kenn