Thx for your suggestions, guys. I think pinching down the barbs would help but single hooks would be even easier. As suggested, I would test 1 of each type by casting before doing any more, just to make sure the 'wiggling' performance was not affected.
Raf---why did you use siwash? Rapalas have split rings, so hooks with ordinary close eyes could possibly be used. I know my silver fox lures, for example, come with a siwash----there is no split ring.